Designer osteogenic proteins

ABSTRACT

The invention relates to novel designer osteogenic proteins having altered affinity for a cognate receptor, nucleic acids encoding the same, and methods of use therefor. More preferably, the novel designer osteogenic proteins are designer BMPs and have altered affinity for a cognate BMP receptor. The designer BMPs demonstrate altered biological characteristics and provide potential useful novel therapeutics.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a division of, and claims the benefit of priorityunder 35 U.S.C. §121 to, U.S. patent application Ser. No. 13/211,755filed Aug. 17, 2011, which in turn claims the benefit of priority under35 U.S.C §119(e) to U.S. Provisional Patent Application No. 61/375,636,filed Aug. 20, 2010, which is herein incorporated in its entirety byreference.

SEQUENCE LISTING

This application contains an Amended Sequence Listing submitted as anelectronic text file named “PC71685A-US_Amended_Sequences_ST25.txt”,having a size in bytes of 206,000, and created on Jun. 3, 2013. Theinformation contained in this electronic file is hereby incorporated byreference in its entirety.

FIELD OF THE INVENTION

This application relates to the field of osteogenic proteins, methods ofmaking improved osteogenic proteins, and methods of treating patientswith osteogenic proteins.

BACKGROUND OF THE INVENTION

The cystine knot cytokine superfamily is divided into subfamilies, whichinclude, the transforming growth factor β (TGFβ) proteins, theglycoprotein hormones, the platelet-derived growth factor-like(PDGF-like) proteins, nerve growth factors (NGF), and the differentialscreening-selected gene aberrative in neuroblastoma (DAN) family (e.g.,cerberus). In turn, the TGFβ superfamily comprises approximately 43members, subdivided into three subfamilies: the TGFβs, the activins andthe bone morphogenetic/growth differentiation factor proteins (BMP/GDF).

The TGF-β superfamily members contain the canonical cystine knottopology. That is, cystine knots are the result of an unusualarrangement of six cysteine residues. The knot consists of bonds betweencysteines 1-4, cysteines 2-5, and the intervening sequence forming aring, through which the disulfide bond between cysteines 3-6 passes. Theactive forms of these proteins are homodimers or heterodimers. In eachcase the monomer topology is stabilized by the cysteine knot andadditional cysteines contribute to additional intrachain bonds and/ormediate dimerization with another protein unit. See Kingsley, 1994,Genes Dev. 8:133-146; Lander et al, 2001, Nature 409:860-921.

BMP/GDFs are the most numerous members of the TGF-β protein superfamily.The BMP/GDF subfamily includes, but is not limited to, BMP2, BMP3(osteogenin), BMP3b (GDF-10), BMP4 (BMP2b), BMP5, BMP6, BMP7 (osteogenicprotein-1 or OP1), BMP8 (OP2), BMP8B (OP3), BMP9 (GDF2), BMP10, BMP11(GDF11), BMP12 (GDF7), BMP13 (GDF6, CDMP2), BMP15 (GDF9), BMP16, GDF1,GDF3, GDF5 (CDMP1; MP52), and GDF8 (myostatin). BMPs are sometimesreferred to as Osteogenic Protein (OPs), Growth Differentiation Factors(GDFs), or Cartilage-Derived Morphogenetic Proteins (CDMPs). BMPs arealso present in other animal species. Furthermore, there is some allelicvariation in BMP sequences among different members of the humanpopulation.

BMPs are naturally expressed as pro-proteins comprising a longpro-domain, one or more cleavage sites, and a mature domain. Thispro-protein is then processed by the cellular machinery to yield adimeric mature BMP molecule. The pro-domain is believed to aid in thecorrect folding and processing of BMPs. Furthermore, in some but not allBMPs, the pro-domain may noncovalently bind the mature domain and mayact as a chaperone, as well as an inhibitor (e.g., Thies et al., GrowthFactors 18:251-9 (2001)).

BMP signal transduction is initiated when a BMP dimer binds two type Iand two type II serine/threonine kinase receptors. Type I receptorsinclude, but are not limited to, ALK-1 (Activin receptor-Like Kinase 1),ALK-2 (also called ActRIa or ActRI), ALK-3 (also called BMPRIa), andALK-6 (also called BMPRIb). Type II receptors include, but are notlimited to, ActRIIa (also called ActRII), ActRIIb, and BMPRII. The humangenome contains 12 members of the receptor serine/threonine kinasefamily, including 7 type I and 5 type II receptors, all of which areinvolved in TGF-β signaling (Manning et al., Science 298:1912-34(2002)), the disclosures of which are hereby incorporated by reference).Thus, there are 12 receptors and 43 superfamily members, suggesting thatat least some TGF-β superfamily members bind the same receptor(s).Following BMP binding, the type II receptors phosphorylate the type Ireceptors, the type I receptors phosphorylate members of the Smad familyof transcription factors, and the Smads translocate to the nucleus andactivate the expression of a number of genes.

BMPs are among the most numerous members of TGF-β superfamily, andcontrol a diverse set of cellular and developmental processes, such asembryonic pattern formation and tissue specification as well aspromoting wound healing and repair processes in adult tissues. BMPs wereinitially isolated by their ability to induce bone and cartilageformation. BMP signaling is inducible upon bone fracture and relatedtissue injury, leading to bone regeneration and repair. BMP moleculeswhich have altered affinity for their receptors would have improvedbiological activity relative to the native proteins. Such BMPs includeproteins with increased in vivo activity and may provide potentialimproved therapeutics for, among other things, tissue regeneration,repair, and the like, by providing greater or altered activity at lowerprotein levels thereby providing improved protein therapeutics.

SUMMARY OF THE INVENTION

The invention includes a designer BMP protein comprising at least onemutation in at least one type I or type II receptor binding domain,wherein the mutation confers altered binding to the type I or type IIBMP receptor compared with the binding to the type I or type II receptorby a corresponding wild type BMP.

In one aspect, the protein is selected from the group consisting ofBMP2, BMP4, BMP5, BMP6, BMP7, BMP8 and BMP9.

In another aspect, the protein comprises at least one mutation within:the type II binding domain A; the type II binding domain B; the type Ibinding domain; and any combination thereof.

The invention also includes a designer osteogenic protein comprising anamino acid sequence comprising at least one mutation in at least onetype I or type II receptor binding domain, wherein the mutation confersaltered binding to the type I or type II BMP receptor compared with thebinding to the type I or type II receptor by wild type BMP2.

In one aspect, the mutation is a mutation within the type II bindingdomain A wherein said mutation is at least one mutation selected fromthe group consisting of a mutation at V33, P36, H39, and F41 withrespect to the sequence of SEQ ID NO:1.

In another aspect, the is a mutation within the type II binding domain Awherein said mutation is at least one mutation selected from the groupconsisting of V331, P36K, P36R, H39A, and F41N with respect to SEQ IDNO:1.

In yet another aspect, the mutation is a mutation within the type IIbinding domain B wherein said mutation is at least one mutation selectedfrom the group consisting of a mutation at E83, S85, M89, L92, E94, E96,K97, and V99 with respect to the sequence of SEQ ID NO:1.

In a further aspect, the mutation is a mutation within the type IIbinding domain B wherein said mutation is at least one mutation selectedfrom the group consisting of E83K, S85N, M89V, L92F, E94D, E96S, K97N,and V99I with respect to of SEQ ID NO:1.

In another aspect, the mutation is a mutation within the type I bindingdomain wherein said mutation is at least one mutation selected from thegroup consisting of a mutation at H44, P48, A52, D53, L55, S57, N68,S69, V70, an insertion of a single amino acid after N71, S72, K73, I74,A77, and V80 with respect to the sequence of SEQ ID NO:1.

In yet another aspect, the mutation is a mutation within the type Ibinding domain wherein said mutation is at least one mutation selectedfrom the group consisting of H44D, P48S, A52N, D53A, L55M, S57A, N68H,S69L, V70M, insertion of P after N71, S72E, K73Y, 174V, A77P, and V80Awith respect to the sequence of SEQ ID NO:1.

In a further aspect, the protein comprises a mutation at each of aminoacids H44, P48, A52, D53, L55, S57, N68, S69, V70, insertion of a singleamino acid after N71, S72, K73, I74, A77, and V80 with respect to thesequence of SEQ ID NO:1.

In another aspect, the protein comprises a mutation at each of aminoacids H44, P48, A52, D53, L55, S57, N68, S69, V70, insertion of a singleamino acid after N71, S72, K73, I74, A77, and V80 with respect to thesequence of SEQ ID NO:1 wherein the mutations are H44D, P48S, A52N,D53A, L55M, S57A, N68H, S69L, V70M, insertion of a P after N71, S72E,K73Y, 174V, A77P, and V80A.

In yet another aspect, the protein comprises a mutation at each of aminoacids V33, P36, H39, S85, M89, L92, E94, E96, K97, and V99 with respectto the sequence of SEQ ID NO:1.

In another aspect, the protein comprises a mutation at each of aminoacids V33, P36, H39, S85, M89, L92, E94, E96, K97, and V99 with respectto the sequence of SEQ ID NO:1, wherein the mutations are V331, P36K,H39A, S85N, M89, L92F, E94D, E96S, K97N, and V99I.

In a further aspect, the protein comprises a mutation at each of aminoacids V33, P36, H39, H44, P48, A52, D53, L55, S57, N68, S69, V70,insertion of a single amino acid after N71, S72, K73, I74, A77, and V80,S85, M89, L92, E94, E96, K97, and V99 with respect to the sequence ofSEQ ID NO:1.

In yet another aspect, the protein comprises a mutation at each of aminoacids V33, P36, H39, H44, P48, A52, D53, L55, S57, N68, S69, V70,insertion of a single amino acid after N71, S72, K73, I74, A77, and V80,S85, M89, L92, E94, E96, K97, and V99 with respect to the sequence ofSEQ ID NO:1 wherein the mutations are V331, P36K, H39A, H44D, P48S,A52N, D53A, L55M, S57A, N68H, S69L, V70M, insertion of a P after N71,S72E, K73Y, 174V, A77P, and V80A, S85N, M89, L92F, E94D, E96S, K97N, andV99I.

In yet another aspect, the protein comprises a mutation at each of aminoacids V33, P36, H39, H44, P48, A52, D53, L55, S57, N68, S69, V70,insertion of a single amino acid after N71, S72, K73, I74, A77, and V80,S85, M89, L92, E94, E96, K97, and V99 with respect to the sequence ofSEQ ID NO:1 wherein the mutations are V331, P36R, H39A, H44D, P48S,A52N, D53A, L55M, S57A, N68H, S69L, V70M, insertion of a P after N71,S72E, K73Y, 174V, A77P, and V80A, S85N, M89, L92F, E94D, E96S, K97N, andV99I.

In another aspect, the protein binds: the ALK2 receptor with a K_(D) notgreater than about 2 nM; the ALK3 receptor with a K_(D) not greater thanabout 2 nM; the ALK6 receptor with a K_(D) not greater than about 1 nM;the ActRIIA receptor with a K_(D) not greater than about 2 nM; theActRIIB receptor with a K_(D) not greater than about 0.5 nM; and theBMPRIIA receptor with a K_(D) not greater than about 3.5 nM.

In one aspect, the protein further comprises 1, 2, 3, 4, 5, 6, 7, 8, 9,or 10 amino acid mutations not located within the type I or the type IIbinding regions.

The invention includes a designer osteogenic protein comprising theamino acid sequence of any one of SEQ ID NOs:8-73.

The invention includes a designer osteogenic protein comprising theamino acid sequence of SEQ ID NO:12.

The invention includes a designer osteogenic protein comprising theamino acid sequence of SEQ ID NO:14.

The invention includes a designer osteogenic protein comprising theamino acid sequence of SEQ ID NO:36.

The invention includes a designer osteogenic protein comprising theamino acid sequence of SEQ ID NO:37.

The invention includes method of producing a designer BMP proteincomprising at least one mutation in at least one type I or type IIreceptor binding domain, wherein the mutation confers altered binding tothe type I or type II BMP receptor compared with the binding to the typeI or type II receptor by a corresponding wild type BMP. The methodcomprises introducing a nucleic acid encoding the protein into a hostcell, culturing the cell under conditions where the protein is produced,and purifying the protein.

In one aspect, the nucleic acid comprises a sequence selected from thenucleic acid sequence of any one of SEQ ID NOs:74-139.

The invention includes a designer BMP6 protein comprising an amino acidsequence comprising at least one mutation in at least one type I or typeII receptor binding domain, wherein the mutation confers altered bindingto the type I or type II BMP receptor compared with the binding to thetype I or type II receptor by wild type BMP6.

In one aspect, the mutation is a mutation within the type II bindingdomain A wherein said mutation is at least one mutation selected fromthe group consisting of a mutation at I57, K60, G61, A63, N65, Y66, andD68 with respect to the sequence of SEQ ID NO:4.

In another aspect, the mutation is a mutation within the type II bindingdomain B wherein said mutation is at least one mutation selected fromthe group consisting of K108, N110, A111, V114, F117, D119, N120, S121,N122, V123, and I124 with respect to the sequence of SEQ ID NO:4.

In yet another aspect, the mutation is a mutation within the type Ibinding domain wherein said mutation is at least one mutation selectedfrom the group consisting of a mutation at S72, N76, A77, H78, M79, N80,A81, N83, V87, T89, H92, L93, M94, N95, P96, E97, Y98, V99, and P100with respect to the sequence of SEQ ID NO:4.

In another aspect, the mutation is a mutation at each of amino acidresidues I57, K60, G61, A63, N65, Y66, and D68 with respect to thesequence of SEQ ID NO:4.

In a further aspect, the mutation is a mutation at each of amino acidresidues K108, N110, A111, V114, F117, D119, N120, S121, N122, V123, andI124 with respect to the amino acid sequence of SEQ ID NO:4.

In yet another aspect, the mutation is a mutation at each of amino acidresidues S72, N76, A77, H78, M79, N80, A81, N83, V87, T89, H92, L93,M94, N95, P96, E97, Y98, V99, or P100 with respect to the amino acidsequence of SEQ ID NO:4.

In another aspect, the designer BMP6 protein comprising an amino acidsequence comprising at least one mutation in at least one type I or typeII receptor binding domain, wherein the mutation confers altered bindingto the type I or type II BMP receptor compared with the binding to thetype I or type II receptor by wild type BMP6 further comprises 1, 2, 3,4, 5, 6, 7, 8, 9, or 10 amino acid mutations not located within the typeI or the type II binding domains.

The invention includes an isolated nucleic acid molecule comprising anucleotide sequence encoding an amino acid sequence selected from thegroup consisting of the sequence of SEQ ID NOs:8 to 73.

In one aspect, the nucleic acid encodes a protein comprising an aminoacid sequence selected from the group consisting of the sequence of SEQID NO: 12, SEQ ID NO: 14, SEQ ID NO:36 and SEQ ID NO:37.

The invention includes an isolated nucleic acid molecule comprising anucleotide sequence selected from the group consisting of SEQ ID NOs:74to 139.

In one aspect, the nucleic acid comprises a nucleotide sequence selectedfrom the group consisting of the sequence of SEQ ID NO:78, SEQ ID NO:80,SEQ ID NO:102, and SEQ ID NO:103.

The invention includes a method of producing the designer BMP6 proteincomprising an amino acid sequence comprising at least one mutation in atleast one type I or type II receptor binding domain, wherein themutation confers altered binding to the type I or type II BMP receptorcompared with the binding to the type I or type II receptor by wild typeBMP6. The method comprises introducing a nucleic acid encoding saidprotein into a host cell, culturing said cell under conditions wheresaid protein is produced, and purifying said protein.

The invention includes a method of treating a bone disease associatedwith bone loss in a patient in need thereof. The method comprisesadministering a therapeutically effective amount of a designer BMPprotein comprising at least one mutation in at least one type I or typeII receptor binding domain, wherein the mutation confers altered bindingto the type I or type II BMP receptor compared with the binding to thetype I or type II receptor by a corresponding wild type BMP protein tothe patient, thereby treating bone disease in the patient.

The invention includes a method of treating fibrosis in a patient inneed thereof. The method comprises administering a therapeuticallyeffective amount of a designer BMP protein comprising at least onemutation in at least one type I or type II receptor binding domain,wherein the mutation confers altered binding to the type I or type IIBMP receptor compared with the binding to the type I or type II receptorby a corresponding wild type BMP to the patient, thereby treatingfibrosis.

The invention includes a method of inducing bone formation in a tissue.The method comprises contacting the tissue with a designer BMP proteincomprising at least one mutation in at least one type I or type IIreceptor binding domain, wherein the mutation confers altered binding tothe type I or type II BMP receptor compared with the binding to the typeI or type II receptor by a corresponding wild type BMP, thereby inducingbone formation in said tissue.

BRIEF DESCRIPTION OF THE DRAWINGS

For the purpose of illustrating the invention, there are depicted in thedrawings certain embodiments of the invention. However, the invention isnot limited to the precise arrangements and instrumentalities of theembodiments depicted in the drawings.

FIGS. 1A-1C, comprising panels A-C, is a diagram showing the alignmentof various wild type and designer BMP amino acid sequences andindicating (by being within a box) the regions of these proteinspotentially involved in type I and type II receptor interactions. FIG.1A shows the amino acid sequence alignment of wild type BMP2 (SEQ ID NO:1), BMP4 (SEQ ID NO: 2), BMP5 (SEQ ID NO: 3), BMP6 (SEQ ID NO: 4), BMP7(SEQ ID NO: 5), BMP8 (SEQ ID NO: 6) and BMP9 (SEQ ID NO: 7). FIG. 1Bshows the amino acid sequence alignment of various designer BMPs wherethe corresponding wild type BMP is BMP2. FIG. 1B discloses SEQ ID NOS 1,142 (consensus sequence), 42-45, 65, 8, 20-21, 10-12, 29, 26, 25, 13-14,36, 50, 37, 32-33, 15-17, 38-39 and 9, respectively, in order ofappearance. FIG. 1C shows the amino acid sequence alignment of variousdesigner BMP6 molecules where the corresponding wild type BMP is BMP6.FIG. 1C discloses SEQ ID NOS 6, 143 (consensus sequence), 53-56, 67,144-147, 68-69, 58, 148, 57, 62, 60, 64 and 149, respectively, in orderof appearance.

FIG. 2 is an illustration of a structural model showing a wild type BMP2homodimer binding to two type I and two type II BMP receptors.

FIG. 3, comprising panels A and B, is an diagram of a structural modelshowing the position of the histidine doorstop (H54) in human BMP2produced in Chinese Hamster Ovary (CHO) (FIG. 3A) and E. coli cells(FIG. 3B).

FIG. 4, comprising panels A and B, is a diagram illustrating thelocation of the glycan tether and potential histidine (His) doorstop.FIG. 4A shows the glycan tether (N-linked glycan at N56) and histidine54, in the non-doorstop orientation, as well as the interaction of theglycan tether with R16 all in CHO-produced BMP2. FIG. 4B shows theglycan tether (N-linked glycan at N80) and the histidine in thenon-doorstop configuration at H78 in BMP6, as well as the R39corresponding to R16 in BMP2. The sequence alignment of BMP2(11-KSSCKRHP) (residues 11 to 18 of SEQ ID NO:1) and BMP6 (35-KTACRKHE)(residues 35 to 42 of SEQ ID NO:4) showing the corresponding amino acidsbetween BMP2 and BMP6 is shown along the top of the figure.

FIGS. 5A-5D, comprising panels A-D, shows various steps in the processfor purification of BMPs and designer BMPs. FIG. 5A shows a chromatogramshowing gradient elution of BMPs using a cellufine sulfate column. FIG.5B is an image of a Coomassie stained SDS-PAGE (non-reduced on the leftand reduced on the right side) gel containing samples of fractions fromthe cellufine sulfate column step. FIG. 5C shows a chromatogram showingthe profile from preparative reversed phase purification step. FIG. 5Dis an image of a Coomassie stained SDS-PAGE (non-reduced on the left andreduced on the right) gel of BMP containing samples of the fractionsobtained by the preparative reversed phase purification step.

FIG. 6, comprising panels A-D, show images of Coomassie-stained SDS-PAGEprotein gels showing purified BMP2 wild type and various mutants asindicated along the top of each gel image. The gels were run undereither non-reducing (FIGS. 6A and 6B) and reducing (FIGS. 6C and 6D)conditions.

FIG. 7 shows alkaline phosphatase assay results in C2C12 pre-myoblastscomparing the osteogenic activity of wild type BMP2 and BMP2/6heterodimer to the various designer BMPs as indicated in the graphlegend.

FIG. 8 shows the results of a C2C12 BMP-Response Element luciferase(BRE-luciferase) assay indicative of Smad activity showing strongersignaling by BMPE compared to BMP2 and equivalent signaling to BMP2/6.

FIG. 9, comprising panels A and B, shows the ectopic bone formationmediated by various BMPs. FIG. 9A is a graph showing the amount ofectopic bone (calculated as milligrams of hydroxyapatite; mg HA) asdetermined by μCT analysis for each limb which was implanted with theindicated BMP (BMP2, BMPE, and BMP2/6) at the dose indicated (0.1 or 0.5μg). FIG. 9B is a graph showing the amount of ectopic bone (calculatedas milligrams of hydroxyapatite) as determined by μCT analysis for eachlimb which was implanted with the indicated BMP (BMP2, BMPG, BMPA, andBMPF) at the dose indicated (0.1 or 0.5 μg). The data presented are from2 separate experiments.

FIGS. 10A-10D, comprising panels A-D, shows images of radiographsshowing the results of a non-human primate (NHP) fibula osteotomy modelat 4 and 8 weeks. Radiographs are shown of the fibulas of 7representative NHPs that received BMPE and BMPG, respectively, at 0.5mg/ml (250 μg total BMP delivered/limb). Each NHP received WT BMP2 atthe same dose in the contralateral limb. FIGS. 10A and 10B show theradiographs for the NHPs indicated at the top of each diagram showingthe effects of BMPE compared with BMP2 wild type at 4 weeks and 8 weeks,respectively. FIGS. 10C and 10D show the radiographs for the NHPsindicated at the top of each diagram showing the effects of BMPGcompared with BMP2 wild type at 4 weeks and 8 weeks, respectively.

FIG. 11 is a graph showing the bone volume of the limbs treated withBMP-E versus contralateral limbs treated with BMP-2.

FIG. 12 is a graph showing results of an alkaline phosphatase assay inC2C12 pre-myoblasts comparing the osteogenic activity of wild type BMP2and BMP-GER, BMP-GEP, and BMP2/6 heterodimer.

FIG. 13 is a graph showing the amount of ectopic bone (calculated asmilligrams of hydroxyapatite) as determined by μCT analysis for eachlimb which was implanted with the indicated BMP (BMP-2, BMP-2/6, BMP-E,BMP-GER, and BMP-6) at the dose indicated (0.05 or 0.25 μg).

FIG. 14 is a graph showing the amount of ectopic bone (calculated asmilligrams of hydroxyapatite) as determined by μCT analysis for eachlimb which was implanted with the indicated BMP (BMP-2, BMP-2/6, BMP-E,BMP-GER, and BMP-6) at the dose indicated (0.05 or 0.25 μg). These arethe results from an experiment separate from that shown in FIG. 13.

FIG. 15, comprising panels A and B, shows images of radiographs and μCTimages showing the results of a non-human primate (NHP) fibula wedgeosteotomy model at 5 and 10 weeks. FIG. 15A shows images of 5-weekradiographs obtained in a NHP fibula wedge osteotomy model. FIG. 15Ashows images of the fibulas of 4 representative NHPs which receivedBMP-GER in one limb and WT BMP-2 in the contralateral limb at 0.5 mg/ml(250 μG total BMP delivered/limb) at 5 weeks. FIG. 15B shows uCT imagesof the same limbs at 10 weeks showing the large calluses of the BMP-GERtreated limbs compared with the BMP2-treated contralateral limbs foreach animal.

FIG. 16, comprising panels A-C, shows graphs illustrating the strength(FIG. 16A), stiffness (FIG. 16B), and callus bone volume (FIG. 16C) ofthe BMP-GER treated limbs versus the BMP-2 treated contralateral limbs.

FIGS. 17A-17C, comprising panels A-C, shows radiographic images of thehealing over time of 3 non-human primate's (NHP) fibulas treated withBMP-GER at 0.5 mg/ml and BMP-2 in the contra lateral limb at 1.5 mg/mlusing a calcium phosphate based cement as a carrier following the wedgedefect model. FIG. 17A, upper panel, shows results for NHP number 1 leftarm treated with 0.5 mg/ml GER as follows: panels 1 and 2 show LAT(lateral) and AP (anterior-posterior) images, respectively, at theinitial time point; panels 3 and 4 show LAT and AP images, respectively,at 2 weeks; panels 5 and 6 show LAT and AP images, respectively, at 4weeks; panels 7 and 8 show LAT and AP images, respectively, at 6 weeks;panels 9 and 10 show LAT and AP images, respectively, at 7 weeks; panels11 and 12 show LAT and AP images, respectively, at 8 weeks; FIG. 17A,lower panel, shows results for NHP number 1 right arm treated with 1.5mg/ml BMP-2 as follows: panels 1 and 2 show LAT (lateral) and AP(anterior-posterior) images, respectively, at the initial time point;panels 3 and 4 show LAT and AP images, respectively, at 2 weeks; panels5 and 6 show LAT and AP images, respectively, at 4 weeks; panels 7 and 8show LAT and AP images, respectively, at 6 weeks; panels 9 and 10 showLAT and AP images, respectively, at 7 weeks; panels 11 and 12 show LATand AP images, respectively, at 8 weeks; FIG. 17B shows the radiographicthe results for NHP number 2 as described for NHP #1 in FIG. 17A; andFIG. 17C sets out the results for NHP number 3 as described for NHP #1in FIG. 17A.

FIG. 18 is a diagram of a structural model showing representations andcomparison of the crystal structures BMP-E and BMP-6 WT. The differencesin the length of the glycan resolved is highlighted showing that theglycan for BMPE that is resolved is much longer than that for BMP6. Thisindicates that the BMPE glycan is more conformationally constrained thanthat of BMP6 such that more of the glycan can be rendered in this model.The histidine doorstop residues for both BMPE and BMP6 are shown insimilar non-doorstop configurations. Also, the arginine glycan “tether”stabilizing the BMPE glycan is shown by dotted lines representing theinteractions of the arginine with the glycan.

FIG. 19 is a closer view of the histidine doorstop and arginine tetherof the BMPE and BMP6 comparison shown in FIG. 18. This image shows thesimilar conformation of the H54 histidine residue of BMPE and theequivalent histidine of BMP6 both in the non-doorstop position. Theimage also shows the R16 tethering (via interactions of the BMPE glycansuch that the glycan is more rigid and therefore more is rendered by themodel compared to the more “floppy” and less constrained glycan of BMP6such that less of the BMP6 glycan is visualized in this model. Thediagram of this model also shows the similar positioning of asparagineN56 of BMPE showing N-linked attachment of the glycan and the equivalentand similarly positioned asparagine of BMP6. The diagram alsoillustrates the potential additional glycan tethering interaction ofBMPE E110 shown by dotted lines between the amino acid residue and thedistal end of the glycan. The differences in the length of the glycanresolved is highlighted showing that less of the darker BMP6 glycan canbe resolved compared with the lighter shaded longer glycan rendered forBMPE indicating that the BMPE glycan is more conformationallyconstrained and thus more is rendered upon structural analysis.

FIG. 20 is a graph showing the results of an alkaline phosphatase assayusing C2C12 pre-myoblasts comparing the osteogenic activity of BMP-2,BMPE and BMP-6 with their Endo-H treated deglycosylated (Degly.)counterparts.

FIG. 21 is a diagram illustrating the structural model of BMPE showingthe location of the glycan tether at R16 and illustrating thestabilizing interactions between the arginine (R16) and glutamic acid(E110 corresponding to E109 of BMP2) residues. The diagram shows thatR16 and E110 both form multiple hydrogen bonds with the third(β-mannose) and fourth (α-mannose) glycan moieties. The diagram alsoshows the position of H54 potential “doorstop” and asparagine 56 (N56)which provides the N-linked attachment site of the glycan.

FIG. 22 is a graph showing the results of an alkaline phoshatase assayusing C2C12 pre-myoblasts comparing the osteogenic activity of BMP-E,with BMP-E-NR, BMP-GER and BMP-GER-NR in the presence of increasingdoses of Noggin—a natural inhibitor of BMP-2. The data demonstrate thatBMP-GER-NR comprising sequences derived from activin was not inhibitedby Noggin even at high concentrations but that BMP-GER was sensitive toNoggin inhibition. Thus, addition of sequences derived from activincaused BMP-GER to become Noggin resistant (NR). These resultsdemonstrate that at least in this in vitro assay, BMP-GER and BMPE,which are Noggin sensitive, become Noggin resistant (NR) uponreplacement of the C-terminal region of the protein with sequencesderived from activin.

FIG. 23 is a graph showing the bone score as determined byimmunohistochemistry (IHC) for rat ectopic implants treated with theindicated BMP at the specified dose. The data show that the bone formingactivity of BMP-GER was greatly decreased when the C-terminal sequenceof the molecule was replaced with a sequence derived from activin (NR).Thus, the data demonstrate that BMP-GER-NR was much less active thanBMP-GER in vivo.

FIG. 24 is a graph showing the bone score as determined byimmunohistochemistry (IHC) for rat ectopic implants treated with theindicated BMP at the specified dose. The data show that the bone formingactivity of BMP-E was greatly decreased, indeed, it was completelyabrogated, when the C-terminal sequence of the molecule was replacedwith a sequence derived from activin (NR).

DETAILED DESCRIPTION OF THE INVENTION

This invention relates a “designer” bone morphogenetic protein, referredto herein as “designer BMP,” “designer osteogenic protein” and “designerprotein.” The designer BMPs of the invention may correspond to the aminoacid sequences of wild type unmodified BMP, such as, but not limited to,BMP2, BMP4, BMP5, BMP6, BMP7, BMP8, and BMP9. In particular embodiments,the designer BMPs show altered binding to a type I and/or type II BMPreceptor when compared to its corresponding wild type BMP. In furtherembodiments, the designer BMP may be modified to have altered half-life,immunogenicity, or any pharmacokinetic/pharmacodynamic (PK/PD) parameterwhen compared to its corresponding BMP.

DEFINITIONS

Unless otherwise defined herein, scientific and technical terms used inconnection with the present invention shall have the meanings that arecommonly understood by those of ordinary skill in the art. Further,unless otherwise required by context, singular terms shall includepluralities and plural terms shall include the singular. Generally,nomenclatures used in connection with, and techniques of, cell andtissue culture, molecular biology, immunology, microbiology, geneticsand protein and nucleic acid chemistry and hybridization describedherein are those well known and commonly used in the art.

The methods and techniques of the present invention are generallyperformed according to methods well known in the art and as described invarious general and more specific references that are cited anddiscussed throughout the present specification unless otherwiseindicated. Such references include, e.g., Sambrook and Russell,Molecular Cloning, A Laboratory Approach, Cold Spring Harbor Press, ColdSpring Harbor, N.Y. (2001), Ausubel et al., Current Protocols inMolecular Biology, John Wiley & Sons, NY (2002), and Harlow and Lane,Antibodies: A Laboratory Manual, Cold Spring Harbor Laboratory Press,Cold Spring Harbor, N.Y. (1990), which are incorporated herein byreference. Enzymatic reactions and purification techniques are performedaccording to manufacturers specifications, as commonly accomplished inthe art or as described herein. The nomenclatures used in connectionwith, and the laboratory procedures and techniques of, analyticalchemistry, synthetic organic chemistry, and medicinal and pharmaceuticalchemistry described herein are those well known and commonly used in theart. Standard techniques are used for chemical syntheses, chemicalanalyses, pharmaceutical preparation, formulation, and delivery, andtreatment of patients.

As used herein, each of the following terms has the meaning associatedwith it in this section.

The articles “a” and “an” are used herein to refer to one or to morethan one (i.e., to at least one) of the grammatical object of thearticle. By way of example, “an element” means one element or more thanone element.

In this application, the use of “or” means “and/or” unless statedotherwise.

Conventional notation is used herein to portray polypeptide sequences:the left-hand end of a polypeptide sequence is the amino-terminus; theright-hand end of a polypeptide sequence is the carboxyl-terminus. Asused herein, the twenty conventional amino acids and their abbreviationsfollow conventional usage. See Immunology—A Synthesis (2nd Edition, E.S. Golub and D. R. Gren, Eds., Sinauer Associates, Sunderland, Mass.(1991)), which is incorporated herein by reference. As used herein,amino acids are represented by the full name thereof, by the threeletter code corresponding thereto, or by the one-letter codecorresponding thereto, as indicated as follows:

Full Name Three-Letter Code One-Letter Code Aspartic Acid Asp D GlutamicAcid Glu E Lysine Lys K Arginine Arg R Histidine His H Tyrosine Tyr YCysteine Cys C Asparagine Asn N Glutamine Gln Q Serine Ser S ThreonineThr T Glycine Gly G Alanine Ala A Valine Val V Leucine Leu L IsoleucineIle I Methionine Met M Proline Pro P Phenylalanine Phe F Tryptophan TrpW

A “conservative amino acid substitution” is one in which an amino acidresidue is substituted by another amino acid residue having a side chainR group with similar chemical properties (e.g., charge orhydrophobicity). In general, a conservative amino acid substitution willnot substantially change the functional properties of a protein. Incases where two or more amino acid sequences differ from each other byconservative substitutions, the percent sequence identity or degree ofsimilarity may be adjusted upwards to correct for the conservativenature of the substitution. Means for making this adjustment arewell-known to those of skill in the art. See, e.g., Pearson, MethodsMol. Biol. 243:307-31 (1994).

Examples of groups of amino acids that have side chains with similarchemical properties include 1) aliphatic side chains: glycine, alanine,valine, leucine, and isoleucine; 2) aliphatic-hydroxyl side chains:serine and threonine; 3) amide-containing side chains: asparagine andglutamine; 4) aromatic side chains: phenylalanine, tyrosine, andtryptophan; 5) basic side chains: lysine, arginine, and histidine; 6)acidic side chains: aspartic acid and glutamic acid; and 7)sulfur-containing side chains: cysteine and methionine. Preferredconservative amino acids substitution groups are:valine-leucine-isoleucine, phenylalanine-tyrosine, lysine-arginine,alanine-valine, glutamate-aspartate, and asparagine-glutamine.

Alternatively, a conservative replacement is any change having apositive value in the PAM250 log-likelihood matrix disclosed in Gonnetet al., Science 256:1443-1445 (1992), herein incorporated by reference.A “moderately conservative” replacement is any change having anonnegative value in the PAM250 log-likelihood matrix.

Preferred amino acid substitutions are those which: (1) reducesusceptibility to proteolysis, (2) reduce susceptibility to oxidation,(3) alter binding affinity for forming protein complexes, and (4) conferor modify other physicochemical or functional properties of suchanalogs. Analogs comprising substitutions, deletions, and/or insertionscan include various muteins of a sequence other than the specifiedpeptide sequence. For example, single or multiple amino acidsubstitutions (preferably conservative amino acid substitutions) may bemade in the specified sequence (preferably in the portion of thepolypeptide outside the domain(s) forming intermolecular contacts, e.g.,outside of the CDRs or the type I or type II receptor binding sites). Aconservative amino acid substitution should not substantially change thestructural characteristics of the parent sequence (e.g., a replacementamino acid should not tend to break a helix that occurs in the parentsequence, or disrupt other types of secondary structure thatcharacterizes the parent sequence). Examples of art-recognizedpolypeptide secondary and tertiary structures are described in Proteins,Structures and Molecular Principles (Creighton, Ed., W. H. Freeman andCompany, New York (1984)); Introduction to Protein Structure (C. Brandenand J. Tooze, eds., Garland Publishing, New York, N.Y. (1991)); andThornton et al., Nature 354:105 (1991), which are each incorporatedherein by reference.

The terms “polynucleotide”, “nucleotide sequence”, “nucleic acid”,“nucleic acid molecule”, “nucleic acid sequence”, and “oligonucleotide”refer to a series of nucleotide bases (also called “nucleotides”) in DNAand RNA, and mean any chain of two or more nucleotides. Thepolynucleotides can be chimeric mixtures or derivatives or modifiedversions thereof, single-stranded or double-stranded. Theoligonucleotide can be modified at the base moiety, sugar moiety, orphosphate backbone, for example, to improve stability of the molecule,its hybridization parameters, etc. A nucleotide sequence typicallycarries genetic information, including the information used by cellularmachinery to make proteins and enzymes. These terms include double- orsingle-stranded genomic and cDNA, RNA, any synthetic and geneticallymanipulated polynucleotide, and both sense and antisensepolynucleotides. This also includes nucleic acids containing modifiedbases, for example, thio-uracil, thio-guanine, and fluoro-uracil, orcontaining carbohydrate, or lipids.

In the context of a nucleotide sequence, the term “substantiallyidentical” is used herein to refer to a first nucleic acid sequence thatcontains a sufficient or minimum number of nucleotides that areidentical to aligned nucleotides in a second nucleic acid sequence suchthat the first and second nucleotide sequences encode a polypeptidehaving common functional activity, or encode a common structuralpolypeptide domain or a common functional polypeptide activity. Forexample, nucleotide sequences having at least about 85%, 90%, 91%, 92%,93%, 94%, 95%, 96%, 97%, 98% or 99% identity to a reference sequence.

By “designer BMP nucleic acids,” and grammatical equivalents herein ismeant nucleic acids that encode designer BMPs.

The terms “protein” and “polypeptide” are used interchangeably herein.These terms refer to a sequential chain of amino acids linked togethervia peptide bonds. The terms include one or more proteins that functionas a discrete unit. If a single polypeptide is the discrete functioningunit and does not require permanent or temporary physical associationwith other polypeptides in order to form the discrete functioning unit,the terms “polypeptide” and “protein” may be used interchangeably. Ifthe discrete functional unit is comprised of multiple polypeptides thatphysically associate with one another, the term “protein” as used hereinrefers to the multiple polypeptides that are physically coupled andfunction together as the discrete unit. A protein to be expressedaccording to the present invention can be a protein therapeutic. Aprotein therapeutic is a protein that has a biological effect on aregion in the body on which it acts or on a region of the body on whichit remotely acts via intermediates. Examples of protein therapeutics arediscussed in more detail below.

“Designer BMP,” as the term is used herein, relates to a BMP proteincomprising at least one amino acid mutation compared to a correspondingwild type BMP without the mutation, wherein the designer BMP hasdetectably altered binding for at least a type I receptor and/or atleast one type II receptor compared with the binding of thecorresponding wild type BMP for the type I and/or type II receptor.

By “corresponding wild type protein” it is meant the wild type versionof the designer BMP prior to the introduction of any mutations. Forexample, if the designer BMP is a designer BMP2, the correspondingwild-type BMP is wild-type BMP2. Thus, in one embodiment, design of adesigner BMP can, but need not, begin with a wild type BMP sequencewherein mutations (e.g., amino acid substitutions, deletions and/orinsertion) are introduced into the wild type sequence. Therefore, thedesigner BMP can correspond with a wild type BMP, and the locations ofthe mutations can be said, for instance, to correspond with, be relativeto and/or be respective with the amino acid sequence of the wild typecorresponding or “reference” BMP sequence.

The proteins of the present invention include fragments, derivatives,analogs, or variants of the polypeptides described herein, and anycombination thereof. The terms “fragment,” “variant,” “derivative” and“analog” when referring to proteins of the present invention include anyproteins which retain at least some of the functional properties of theprotein from which it was derived.

By the term “fragment” as used herein refers to a polypeptide and isdefined as any discrete portion of a given polypeptide that is unique toor characteristic of that polypeptide. The term as used herein alsorefers to any discrete portion of a given polypeptide that retains atleast a fraction of the activity of the full-length polypeptide. Incertain embodiments, the fraction of activity retained is at least 10%of the activity of the full-length polypeptide. In certain embodiments,the fraction of activity retained is at least 20%, 30%, 40%, 50%, 60%,70%, 80% or 90% of the activity of the full-length polypeptide. Incertain embodiments, the fraction of activity retained is at least 95%,96%, 97%, 98% or 99% of the activity of the full-length polypeptide. Incertain embodiments, the fraction of activity retained is 100% or moreof the activity of the full-length polypeptide. Alternatively oradditionally, the term as used herein also refers to any portion of agiven polypeptide that includes at least an established sequence elementfound in the full-length polypeptide. In some embodiments, the sequenceelement spans at least about 4-5, 10, 15, 20, 25, 30, 35, 40, 45, 50 ormore amino acids of the full-length polypeptide. Fragments of proteinsof the present invention include proteolytic fragments, as well asdeletion fragments.

Variants of the proteins of the present invention include fragments asdescribed above, and also polypeptides with altered amino acid sequencesdue to amino acid substitutions, deletions, or insertions. Variants mayoccur naturally or be non-naturally occurring. Non-naturally occurringvariants may be produced using art-known mutagenesis techniques. Variantproteins may comprise conservative or non-conservative amino acidsubstitutions, deletions or additions.

The proteins of the invention include proteins having one or moreresidues chemically derivatized by reaction of a functional side group.Also included as proteins of the invention are polypeptides that containone or more naturally occurring amino acid derivatives of the twentystandard amino acids. For example, 4-hydroxyproline may be substitutedfor proline; 5-hydroxylysine may be substituted for lysine;3-methylhistidine may be substituted for histidine; homoserine may besubstituted for serine; and ornithine may be substituted for lysine.

“Recombinantly expressed polypeptide” and “recombinant polypeptide” asused herein refer to a polypeptide expressed from a host cell that hasbeen manipulated to express that polypeptide. In certain embodiments,the host cell is a mammalian cell. In certain embodiments, thismanipulation may comprise one or more genetic modifications. Forexample, the host cells may be genetically modified by the introductionof one or more heterologous genes encoding the polypeptide to beexpressed. The heterologous recombinantly expressed polypeptide can beidentical or similar to polypeptides that are normally expressed in thehost cell. The heterologous recombinantly expressed polypeptide can alsobe foreign to the host cell, e.g. heterologous to polypeptides normallyexpressed in the host cell. In certain embodiments, the heterologousrecombinantly expressed polypeptide is chimeric. For example, portionsof a polypeptide may contain amino acid sequences that are identical orsimilar to polypeptides normally expressed in the host cell, while otherportions contain amino acid sequences that are foreign to the host cell.Additionally or alternatively, a polypeptide may contain amino acidsequences from two or more different polypeptides that are both normallyexpressed in the host cell. Furthermore, a polypeptide may contain aminoacid sequences from two or more polypeptides that are both foreign tothe host cell. In some embodiments, the host cell is geneticallymodified by the activation or upregulation of one or more endogenousgenes.

Calculations of homology or sequence identity between sequences (theterms are used interchangeably herein) are performed as follows. Todetermine the percent identity of two amino acid sequences, or of twonucleic acid sequences, the sequences are aligned for optimal comparisonpurposes (e.g., gaps can be introduced in one or both of a first and asecond amino acid or nucleic acid sequence for optimal alignment andnon-homologous sequences can be disregarded for comparison purposes). Ina typical embodiment, the length of a reference sequence aligned forcomparison purposes is at least 30%, at least 40%, at least 50% or 60%,or at least 70%, 80%, 90%, or 100% of the length of the referencesequence. The amino acid residues or nucleotides at corresponding aminoacid positions or nucleotide positions are then compared. When aposition in the first sequence is occupied by the same amino acidresidue or nucleotide as the corresponding position in the secondsequence, then the molecules are identical at that position (as usedherein amino acid or nucleic acid “identity” is equivalent to amino acidor nucleic acid “homology”).

To determine the percent identity of two amino acid sequences or of twonucleic acids, the sequences are aligned for optimal comparison purposes(e.g., gaps can be introduced in the sequence of a first amino acid ornucleic acid sequence for optimal alignment with a second amino acid ornucleic acid sequence). The percent identity between the two sequencesis a function of the number of identical positions shared by thesequences (i.e., % homology=# of identical positions/total # ofpositions×100). The determination of percent homology between twosequences can be accomplished using a mathematical algorithm. Apreferred, non-limiting example of a mathematical algorithm utilized forthe comparison of two sequences is the algorithm of Karlin et al., ProcNatl Acad Sci USA 87:2264-8 (1990), modified as in Karlin et al., ProcNatl Acad Sci USA 90:5873-7 (1993). Such an algorithm is incorporatedinto the NBLAST and XBLAST programs of Altschul et al., J Mol Biol215:403-10 (1990). BLAST nucleotide searches can be performed with theNBLAST program, score=100, wordlength=12.

BLAST protein searches can be performed with the XBLAST program,score=50, wordlength=3. To obtain gapped alignments for comparisonpurposes, Gapped BLAST can be utilized as described in Altschul et al.,Nucleic Acids Res 25:3389-402 (1997). When utilizing BLAST and GappedBLAST programs, the default parameters of the respective programs (e.g.,XBLAST and NBLAST) can be used.

The percent identity between the two sequences is a function of thenumber of identical positions shared by the sequences, taking intoaccount the number of gaps, and the length of each gap, which need to beintroduced for optimal alignment of the two sequences.

The comparison of sequences and determination of percent identitybetween two sequences can be accomplished using a mathematicalalgorithm. In one embodiment, the percent identity between two aminoacid sequences is determined using the Needleman-Wunsch algorithm(Needleman et al., J Mol Biol 48:443-53 (1970)) which has beenincorporated into the GAP program in the GCG software package (availableon at gcg.com), using either a Blossum 62 matrix or a PAM250 matrix, anda gap weight of 16, 14, 12, 10, 8, 6, or 4 and a length weight of 1, 2,3, 4, 5, or 6. In yet another embodiment, the percent identity betweentwo nucleotide sequences is determined using the GAP program in the GCGsoftware package (available on the internet at gcg.com), using aNWSgapdna.CMP matrix and a gap weight of 40, 50, 60, 70, or 80 and alength weight of 1, 2, 3, 4, 5, or 6. One typical set of parameters (andthe one that should be used unless otherwise specified) are a Blossum 62scoring matrix with a gap penalty of 12, a gap extend penalty of 4, anda frameshift gap penalty of 5.

The percent identity between two amino acid or nucleotide sequences canbe determined using the algorithm of E. Myers and W. Miller (Myers etal., Comput Appl Biosci 4:11-7 (1988)) which has been incorporated intothe ALIGN program (version 2.0), using a PAM120 weight residue table, agap length penalty of 12 and a gap penalty of 4.

“Instructional material,” as that term is used herein, includes apublication, a recording, a diagram, or any other medium of expressionwhich can be used to communicate the usefulness of the compound,combination, and/or composition of the invention in the kit foraffecting, alleviating or treating the various diseases or disordersrecited herein. Optionally, or alternately, the instructional materialcan describe one or more methods of alleviating the diseases ordisorders in a cell, a tissue, or a mammal, including as disclosedelsewhere herein.

The instructional material of the kit may, for example, be affixed to acontainer that contains the compound and/or composition of the inventionor be shipped together with a container which contains the compoundand/or composition. Alternatively, the instructional material may beshipped separately from the container with the intention that therecipient uses the instructional material and the compoundcooperatively.

Except when noted, the terms “patient” or “subject” are usedinterchangeably and refer to mammals such as human patients andnon-human primates, as well as veterinary subjects such as rabbits,rats, and mice, and other animals. Preferably, patient refers to ahuman.

“Effective amount”, or “therapeutically effective amount,” as the termsare used interchangeably herein, is an amount that when administered toa tissue or a mammal, preferably a human, mediates a detectabletherapeutic response compared to the response detected in the absence ofthe compound. A therapeutic response, such as, but not limited to,inhibition of and/or decreased fibrosis, increased bone mass or bonedensity, and the like, can be readily assessed by a plethora ofart-recognized methods, including, e.g., such methods as disclosedherein.

The skilled artisan would understand that the effective amount of thecompound or composition administered herein varies and can be readilydetermined based on a number of factors such as the disease or conditionbeing treated, the stage of the disease, the age and health and physicalcondition of the mammal being treated, the severity of the disease, theparticular compound being administered, and the like

As used herein, to “treat” means reducing the frequency with whichsymptoms of a disease (e.g., decreased bone density, fracture, fibrosis,and the like) are experienced by a patient. The term includes theadministration of the compounds or agents of the present invention toprevent or delay the onset of the symptoms, complications, orbiochemical indicia of a disease, alleviating the symptoms or arrestingor inhibiting further development of the disease, condition, ordisorder. Treatment may be prophylactic (to prevent or delay the onsetof the disease, or to prevent the manifestation of clinical orsubclinical symptoms thereof) or therapeutic suppression or alleviationof symptoms after the manifestation of the disease.

By the phrase “specifically binds,” as used herein, is meant a compound,e.g., a protein, a nucleic acid, an antibody, and the like, whichrecognizes and binds a specific molecule, but does not substantiallyrecognize or bind other molecules in a sample. For instance, an BMPprotein, an antibody or a peptide inhibitor which recognizes and binds acognate receptor (e.g., a BMP type I or type II receptor, an antibodythat binds with its cognate antigen, and the like) in a sample, but doesnot substantially recognize or bind other molecules in the sample. Thus,under designated assay conditions, the specified binding moiety (e.g., aBMP or a receptor binding fragment thereof) binds preferentially to aparticular target molecule and does not bind in a significant amount toother components present in a test sample. A variety of assay formatsmay be used to select an antibody that specifically binds a molecule ofinterest. For example, solid-phase ELISA immunoassay,immunoprecipitation, BIAcore, FACS, Octet, and Western blot analysis areamong many assays that may be used to identify a BMP that specificallyreacts with a BMP receptor. Typically, a specific or selective reactionwill be at least twice background signal or noise, more preferably, atleast five-fold greater than background signal or noise, and moretypically, more than 10 times background, even more specifically, a BMPis said to “specifically bind” a BMP receptor when the equilibriumdissociation constant (K_(D)) is 100 μM, more preferably 10 μM, evenmore preferably 1 μM, yet more preferably 100 nM and most preferably 10nM.

The term “K_(D)” refers to the equilibrium dissociation constant of aparticular ligand-receptor interaction.

“Binding affinity” generally refers to the strength of the sum total ofnoncovalent interactions between a binding site of a molecule (e.g., aBMP ligand) and its binding partner (e.g., a BMP type I or type IIreceptor). Unless indicated otherwise, as used herein, “bindingaffinity” refers to intrinsic binding affinity which reflects a 1:1interaction between members of a binding pair (e.g., BMP and its cognatereceptor). The affinity of a molecule X for its partner Y can generallybe represented by the dissociation constant (Kd).

Affinity can be measured by common methods known in the art, includingthose described herein. Low-affinity BMPs generally bind a receptorslowly and tend to dissociate readily, whereas high-affinity BMPsgenerally bind a receptor faster and tend to remain bound longer. Avariety of methods of measuring binding affinity are known in the art,any of which can be used for purposes of the present invention. Specificillustrative embodiments are described elsewhere herein.

The term “k_(on)”, as used herein is intended to refer to theassociation or on rate constant, or specific reaction rate, of theforward, or complex-forming, reaction, measured in units: M⁻¹ sec⁻¹.

The term “k_(off)”, as used herein, is intended to refer to thedissociation or off rate constant, or specific reaction rate, fordissociation of an antibody from the antibody/antigen complex, measuredin units: sec⁻¹.

The term “K_(d)”, as used herein, is intended to refer to thedissociation constant of a particular antibody-antigen interaction. Itis calculated by the formula:k _(off) /k _(on) =K _(d)

The term “altered binding” as used herein means the designer BMPcomprises a different binding specificity for at least a type I receptorand/or a type II receptor when compared with the binding of acorresponding wild type BMP to the same type I and/or type II receptor.The designer BMP may bind with greater or lesser affinity with thereceptor compared to the binding of the wild type BMP to that receptor.For instance, if the wild type BMP bound a certain type I receptor witha certain binding affinity, the corresponding designer BMP binds thatreceptor with greater or lesser affinity compared with the wild typeBMP. It may even be that the designer BMP will specifically bind areceptor that the wild type BMP did not detectably bind and vice-a-versawhere the designer BMP will no longer detectably bind a receptor thatthe wild type BMP binds. Thus, altered binding encompasses anydetectable change in binding by a designer BMP to a type I or type IIreceptor compared with the binding of that receptor by the correspondingwild type BMP. It may be that the designer BMP has a greater or lesserk_(on) value compared with the k_(on) value for a corresponding wildtype BMP and/or the designer BMP has a greater or lesser k_(off) valuecompared with the k_(off) value of the corresponding wild type BMP suchthat the Kd of the designer BMP is greater or lesser than the Kd of acorresponding wild type BMP for the same BMP receptor. Thus, anydifference in a binding characteristic and/or affinity value between adesigner BMP and a corresponding wild type BMP are encompassed by theterm “altered binding” as used herein.

The term “surface plasmon resonance”, as used herein, refers to anoptical phenomenon that allows for the analysis of real-time biospecificinteractions by detection of alterations in protein concentrationswithin a biosensor matrix, for example using the BIAcore system(Pharmacia Biosensor AB, Uppsala, Sweden, and Piscataway, N.J.). Forfurther descriptions, see, e.g., Johnsson, et al., Ann. Biol. Clin. 51:19-26 (1993); Johnsson, et al., Biotechniques 11: 620-627 (1991);Johnsson, et al., J. Mol. Recognit. 8: 125-131 (1995); and Johnnson, etal., Anal. Biochem. 198: 268-277 (1991).

As used herein, “substantially pure” means an object species is thepredominant species present (i.e., on a molar basis it is more abundantthan any other individual species in the composition), and preferably asubstantially purified fraction is a composition wherein the objectspecies (e.g., a designer BMP) comprises at least about 50 percent (on amolar basis) of all macromolecular species present. Generally, asubstantially pure composition will comprise more than about 80 percentof all macromolecular species present in the composition, morepreferably more than about 85%, 90%, 95%, and 99%. Most preferably, theobject species is purified to essential homogeneity (contaminant speciescannot be detected in the composition by conventional detection methods)wherein the composition consists essentially of a single macromolecularspecies.

DESCRIPTION Bone Morphogenetic Proteins (BMPs)

As stated previously elsewhere herein, BMPs are members of the TGF-βprotein superfamily all of which are characterized by six-conservedcysteine residues (Lander et al, (2001) Nature, 409:860-921. The BMP/GDFsubfamily includes, but is not limited to, BMP2, BMP3 (osteogenin) (see,e.g., U.S. Pat. No. 6,177,406), BMP3b (GDF-10) (see, e.g., U.S. Pat. No.6,204,047), BMP4 (BMP2b) (see, e.g., U.S. Pat. No. 6,245,889), BMP5(see, e.g., U.S. Pat. No. 5,543,394), BMP6 (see, e.g., U.S. Pat. No.6,613,744), BMP7 (osteogenic protein-1 or OP1) (see, e.g., U.S. Pat. No.5,141,905), BMP8 (OP2) (see, e.g., U.S. Pat. No. 5,688,678), BMP8B (OP3)(see, e.g., U.S. Pat. No. 5,854,071), BMP9 (GDF2) (see, e.g., U.S. Pat.No. 6,287,816), BMP10 (see, e.g., U.S. Pat. No. 5,703,043), BMP11(GDF11) (see, e.g., U.S. Pat. No. 6,437,111), BMP12 (GDF7) (see, e.g.,U.S. Pat. No. 6,027,919), BMP13 (GDF6, CDMP2) (see, e.g., U.S. Pat. No.6,027,919), BMP15 (GDF9) (see, e.g., U.S. Pat. No. 6,034,229), BMP16(see, e.g., U.S. Pat. No. 6,331,612), GDF1 (see, e.g., US ApplicationNo. 2004/0039162), GDF3 (see, e.g., U.S. Pat. No. 6,025,475), GDF5(CDMP1; MP52) (see, e.g., U.S. Pat. No. 5,994,094), and GDF8 (myostatin)(see, e.g., U.S. Pat. No. 5,827,733).

BMPs specifically bind their cognate receptors, which include Type Ireceptors: ALK-I, ALK-2 (also called ActRIa or ActRI), ALK-3 (alsocalled BMPRIa), and ALK-6 (also called BMPRIb); and Type II receptors:ActRIIa (also called ActRII), ActRIIb, and BMPRII. The BMP-receptorbinding interactions have been studied extensively, and the bindingspecificities of each wild type BMP for each type I and/or type IIreceptor is generally known in the art and are shown in Table 1. See,e.g., Nickel et al., Cytokine Growth Factor Rev 20:367-77 (2009);Heinecke et al., BMC Biol 7:59 (2009).

TABLE 1 ALK 1 ALK 2 ALK 3 ALK 6 ACTIIA ACTIIB BMPRII BMP-2 No No ++++++++ ++ +++ ++ Binding Binding BMP-4 No No ++++ ++++ ++ ++ ++ BindingBinding BMP-6 No No ++ ++ ++++ ++++ ++++ Binding Binding BMP-7 No No ++++ ++++ ++++ ++++ Binding Binding BMP-9 +++++ No No No ++ +++ ++++Binding Binding BindingDesigner Bone Morphogenetic Proteins with Improved Osteogenic Activity

This application is based, in part on the understanding that each BMPdimer binds to four BMP receptors two type I receptors and two type IIreceptors. The specificities of each BMP for each receptor are known inthe art as shown above in Table 1. Also, the receptor binding regions ofvarious BMPs that mediate binding of the BMP for each receptor have beenmapped and are shown in Table 2. For instance, it is well establishedthat wild type BMP2 and BMP4 bind type I BMP receptors Alk-3 and ALK-6with high affinity and bind type II BMP receptors with lower affinity.On the other hand, wild type BMP6 and BMP7 are known to have bind typeII receptors ActrIIA, ActrIIB, and BMPRII with high affinity but bindtype I receptors with lower affinity than they do to type II. It isbelieved that the differing cellular responses from the approximatelyforty-three TGFβ superfamily members signaling through interaction withapproximately twelve receptors is believed to be due to each ligandutilizing a specific repertoire of receptors with which it binds withdiffering affinities. The type I and II binding domains are described inTable 2.

TABLE 2 Type II Type II domain A Type I domain domain B BMP amino acidsamino acids amino acids BMP2 (SEQ ID NO 1) 31-44 48-76   83-100 BMP4(SEQ ID NO: 2) 33-46 50-78   85-102 BMP5 (SEQ ID NO: 3) 54-67 71-100107-120 BMP6 (SEQ ID NO: 4) 55-69 73-102 108-126 BMP7 (SEQ ID NO: 5)55-69 73-102 108-126 BMP8 (SEQ ID NO: 6) 55-69 73-102 108-126 BMP9 (SEQID NO: 7) 25-39 42-71  78-96

Rational Amino Acid Substitution to Alter Receptor Binding of DesignerBMPs

In one embodiment, the invention comprises introducing an amino acidmutation in at least one receptor binding site thereby providing alteredbinding to type I and type II BMP receptors by designer BMPs compared tothe binding of the corresponding wild type BMP to those receptors. Thatis, it is well known in the art that wild type BMP2 shows a relativelyhigh affinity for type I receptors, while wild type BMP6 shows a highaffinity for type II receptors. It is further known in the art thatheterodimers of wild type BMP2 and BMP6 bind to both type I and type IIreceptors with relatively high affinity each BMP apparently providingthe higher affinity binding site for each receptor. See Table 3, below.The BMP2/6 heterodimers are known to be more active that BMP2 or BMP6alone or as homodimers, in both in vitro and in vivo bone formationassays. Table 3 shows an example of BMP2 and BMP6 binding affinities totype I and II receptors.

TABLE 3 Type I Type II ALK3 ALK6 ActRIIA ActRIIB Ligand K_(D) (nM) K_(D)(nM) K_(D) (nM) K_(D) (nM) BMP2 0.69 0.17 141 42 BMP6 150 102 0.73 2.0BMP2/6 1.67 0.43 2.56 1.15

Accordingly, it is an object of the invention to provide designer BMPswith improved binding to type I and/or type II receptors. As shown inFIG. 1A and Table 2, each BMP comprises three binding sites thatcontribute to receptor binding. From N- to C-terminus, each BMPcomprises a type II receptor binding site A, a type I receptor bindingsite, and a second type II receptor binding site B. Although anexemplary alignment of wild type BMP2, BMP4, BMP5, BMP6, BMP7, BMP8, andBMP9 is illustrated in FIG. 1, the skilled artisan will appreciate thatthere are well-known alignments providing the relative positioning ofvarious amino acids among the members of the TGBβ superfamily. Suchalignments are provided, among others, in International Publication Nos.WO 2009/086131 (e.g., FIGS. 15-17, FIG. 31A), WO 2008/051526 (FIGS.9-12), WO 2005/118636 (FIG. 6), WO 2005/118635, WO 2005/113585 (FIG. 3),WO 2001/92298 (FIG. 6A-6C), Kirsch et al., EMBO J. 19:3314-3324 (2000)(FIG. 1), US Patent Application Publication No., 2007/0293425 (FIG. 6),Groppe et al., Nature 420:636-642 (2002), Nickel et al., J. Bone JointSurg. Am. 83:7-14 (2001), and Weber et al., BMC Structural Biol. 7:6(2007). Thus, using protein sequence alignment algorithms and toolswell-known in the art, including the alignments of the amino acidsequences of the various TGFβ superfamily members, as well as thedisclosure provided herein, the corresponding amino acid in one BMP/GDFprotein relative to the amino acid at any position in another BMP/GDFprotein can be determined. In one embodiment, the corresponding aminoacid residues in BMP-2, BMP-4, BMP-5, BMP-6, BMP-7, BMP-8 and BMP-9 areshown (see, e.g., FIG. 1A).

In some embodiments of the invention, the designer BMP comprisesmutations in a type I binding domain or a type II binding domain,wherein the mutations confer altered binding to a type I or type II BMPreceptor. In some embodiments, the designer BMP comprises one or moremutations in both a type I binding domain and a first (binding domain A)or second (binding domain B) type II binding domain. In otherembodiments, the designer BMP comprises one or more mutations in bothtype II binding domains. In other embodiments, the designer BMPcomprises one or more mutations in the first type II binding domain, inthe second type II binding domain, and in the type I binding domain. Insome embodiments, the designer BMP comprises one or more mutations inthe type I binding domain.

In some embodiments, the mutations improve binding to a type I receptor.In other embodiments, the mutations improve binding to a type IIreceptor. In other embodiments, the mutations decrease binding to a typeI or type II receptors. In some embodiments, the mutations create ordestroy a glycan tether as more fully set forth below. In someembodiments, the mutations create or destroy a His doorstop as morefully set forth below.

Because BMPs are so well characterized and understood in the art, itwould be understood, once provided with the disclosure provided herein,the location of possible mutations that can be made that do not furtheraffect the activity of the designer BMPs would be understood.Accordingly, the designer BMPs of the invention encompass variant BMPswhich differ from a corresponding wild type or designer BMP in that itcontains additional insertions, deletions, or substitutions which do notaffect the receptor binding affinity of the variant BMPs. In somenon-limiting embodiments, those of skill in the art would understandthat the cysteines involved in cysteine knot formation and amino acidsinvolved in receptor interactions should not be mutated or should bechanged with conservative substitutions, while other amino acids may bemore freely substituted, inserted, or deleted without adverselyaffecting biological activity of the designer BMP.

It should be noted that unless otherwise stated, all positionalnumbering of designed or modified BMPs is based on the sequences of themature native BMPs. Designer BMPs are characterized by the predeterminednature of the variation, a feature that sets them apart from naturallyoccurring allelic or interspecies variation of the BMP sequence.Variants of designer BMPs must retain at least 50% of the activity ofthe corresponding wild type or designer BMP activity in one or more celltypes, as determined using an appropriate assay described below.Variants that retain at least 75%, 80%, 85%, 90% or 95% of wild typeactivity are more preferred, and variants that are more active than wildtype are especially preferred. A designer BMP may contain insertions,deletions, and/or substitutions at the N-terminus, C-terminus, orinternally. In a preferred embodiment, designed or modified BMPs have atleast 1 residue that differs from the most similar human BMP sequence,with at least 2, 3, 4, 5, 6, 7, 8, 9, 10 or more different residuesbeing more preferred.

Designer BMPs of the invention maintain at least 80%, at least 81%, atleast 82%, at least 83%, at least 84%, at least 85%, at least 86%, atleast 87%, at least 88%, at least 89%, at least 90%, at least 91%, atleast 92%, at least 93%, at least 94%, at least 95%, at least 96%, atleast 97%, at least 98%, or at least 99% identity with the correspondingwild-type BMP protein sequence.

Designer BMPs of the invention may maintain at least 80%, at least 81%,at least 82%, at least 83%, at least 84%, at least 85%, at least 86%, atleast 87%, at least 88%, at least 89%, at least 90%, at least 91%, atleast 92%, at least 93%, at least 94%, at least 95%, at least 96%, atleast 97%, at least 98%, or at least 99% identity with the conservedcysteine domain of the C-terminal region of the corresponding wild-typeBMP protein sequence.

Designer BMPs may contain further modifications, for instance mutationsthat alter additional protein properties such as stability orimmunogenicity or which enable or prevent posttranslationalmodifications such as PEGylation or glycosylation. Designer BMPs may besubjected to co- or posttranslational modifications, including but notlimited to synthetic derivatization of one or more side chains ortermini, glycosylation, PEGylation, circular permutation, cyclization,fusion to proteins or protein domains, and addition of peptide tags orlabels.

Due to the degeneracy of the genetic code, an extremely large number ofnucleic acids may be made, all of which encode the designer BMPs of thepresent invention, by simply modifying the sequence of one or morecodons in a way that does not change the amino acid sequence of thedesigner BMP. The designer BMPs of the invention do not comprise thesesequences set forth in WO2008/051526 or WO2009/086131.

As described above, BMPs are naturally expressed as pro-proteinscomprising a long pro-domain, one or more cleavage sites, and a maturedomain. This pro-protein is then processed by the cellular machinery toyield a dimeric mature BMP molecule. In a preferred embodiment, thedesigner BMPs of the invention are produced in a similar manner. Thepro-domain is believed to aid in the correct folding and processing ofBMPs. Furthermore, in some but not all BMPs, the pro-domain maynoncovalently bind the mature domain and may act as a chaperone, as wellas an inhibitor (e.g., Thies et al. (2001) Growth Factors, 18:251-259).Preferably, the modified BMPs of the invention are produced and/oradministered therapeutically in this form. Alternatively, BMPs may beproduced in other forms, including, but not limited to, where the maturedomain is produced directly or refolded from inclusion bodies, orcomprises full-length intact pro protein. The designer BMPs of theinvention will be useful in these and other forms.

In particular embodiments, the designer BMP of the invention comprises abackbone BMP, i.e., the wild type BMP, to which the designer BMPcorresponds. In particular embodiments, this backbone BMP may be a wildtype BMP2, BMP4, BMP5, BMP6, BMP7, BMP8, or BMP9 backbone.

In some embodiments of the invention, the designer BMP comprises atleast one mutation in a type I binding domain and/or a type II bindingdomain, wherein the mutation confers altered binding to a type I or typeII BMP receptor compared with the binding of a corresponding wild typeBMP not comprising the mutation. In some embodiments, the designer BMPcomprises at least one mutation in both a type I binding domain and atleast one mutation in a type II binding domain. In other embodiments,the designer BMP comprises at least one mutation within the type IIbinding domain A and the type II binding domain B. In other embodiments,the designer BMP comprises at least one mutation in type II bindingdomain A, type II binding domain B, and a type I binding domain.

In certain embodiments, the mutation may comprise an amino or nucleicacid substitution, deletion and/or insertion. In a preferred embodiment,the mutation comprises an amino acid substitution.

In some embodiments, the backbone BMP is a wild type BMP and themutations are one or more of the mutations listed in Tables 4 to 6. Thedesigner BMP may contain any combination and any number of mutationslisted in these tables.

In some embodiments, the backbone BMP is a wild type BMP and themutations are one or more of the mutations listed in Tables 4 to 6. Thedesigner BMP may contain a permutation and any and all of the mutationslisted in these tables or disclosed elsewhere herein.

TABLE 4 Type I Binding Domain Mutations BMP2 BMP4 BMP5 BMP6 BMP7 BMP8BMP9 Possible mutations P48 P50 S71 S72 A72 S72 F42 F, S, N, A, P F49F51 F72 F73 F73 F73 F43 Y A52 A54 N75 N76 N76 D76 A46 N, A D53 D55 A76A77 S77 S77 D47 A, E, D H54 H56 H77 H78 Y78 C78 D48 D, C L55 L57 M78 M79M79 M79 V49 M, V, L N56 N58 N79 N80 N80 N80 T50 T, N S57 S59 A80 A81 A81A82 P51 A P N59 N61 N82 N83 N83 N83 K53 K, N V63 V65 V86 V87 V87 L87 V57I, V, L T65 T67 T88 T89 T89 S89 T59 A, T, S N68 N70 H91 H92 H92 H92 H62H, N S69 S71 L92 L93 F93 L93 L63 L, S, F V70 V72 M93 M94 I94 M94 K64 M,K, I, V N71 N73 F94 N95 N95 M95 F65 F, N, M P95 P96 P96 P96 P66 INSERTS, P; DELETE P S72 S74 D96 E97 E97 D97 T67 Q, T, E, D K73 S75 H97 Y98T98 A98 K68 Y, H, T, A, K I74 I76 V98 V99 V99 V99 V69 A, V, I P75 P77P99 P100 P100 P100 G70 S, G

TABLE 5 Type II Binding Domain A Mutations BMP2 BMP4 BMP5 BMP6 BMP7 BMP8BMP9 Possible mutations V33 V35 I56 I57 I57 I57 I27 I, V P36 P38 E59 K60E60 Q60 K30 K, R, P, E, Q G37 G39 G60 G61 G61 G61 E31 G, E H39 Q41 A62A63 A63 S63 E33 A, E, S, Q F41 F43 F64 N65 Y65 Y65 Y35 N, Y, F Y42 Y44Y65 Y66 Y66 Y66 E36 Y, E H44 H46 D67 D68 E68 E68 K38 H, D, K, R, E

TABLE 6 Type II Binding Domain B Mutations BMP2 BMP4 BMP5 BMP6 BMP7 BMP8BMP9 Possible mutations E83 E85 K107 K108 Q108 K108 K78 Q, K, E S85 S87N109 N110 N110 S110 S80 N, S A86 A88 A110 A111 A111 A111 P81 P, A M89M91 V113 V114 V114 V114 V84 M, V L92 L94 F116 F117 F117 Y117 K87 F, K,L, Y E94 E96 D118 D119 D119 D118 D89 D, E N95 Y97 S119 N120 S120 S119M90 M, N, S E96 D98 S120 S121 S121 S120 G91 S, G, D K97 K99 N121 N122N122 N121, V92 N, V, K N122 V98 V100 V122 V123 V123 V123 P93 P, V V99V101 I123 I124 I124 I124 T94 T, I, V

In some embodiments, the mutations improve binding to a type I receptor.In other embodiments improve binding to a type II receptor. In otherembodiments, the mutations decrease binding to a type I or type IIreceptors.

Tables 4-6 above provide a non-limiting compilation of example mutationsof the present invention where the position of the mutation is providedrelative to the corresponding wild type BMP amino acid sequence. Thus,in some embodiments, the designer BMP comprises the following preferredcombinations of mutations.

In certain embodiments, the corresponding wild type BMP to the designerBMP is BMP2. Further, the at least one mutation within the type IIreceptor binding domain A is a mutation selected from the groupconsisting of V33, P36, G37, H39, F41, Y42 AND H44.

In other embodiments, the designer BMP comprises at least one mutationwithin the type II receptor binding domain A and further comprises atleast one additional mutation within a type I receptor binding domain.The mutation within the type I receptor binding domain is at least onemutation at P48, F49, A52, D53, H54, L55, N56, S57, N59, V63, T65, N68,S69, V70, N71, S72, K73, I74, and P75 with respect to the sequence ofSEQ ID NO:1.

In yet further embodiments, the designer BMP comprises at least onemutation within a type II receptor binding domain A, at least onemutation within the type I receptor binding domain, and furthercomprises at least one additional mutation within a type IIB receptorbinding domain. The mutation within the type II receptor binding domainB is at least one mutation at E83, S85, A86, M89, L92, E94, N95, E96,K97, V98, and V99 with respect to the sequence of SEQ ID NO:1.

In some embodiments, the designer BMP comprises mutations at each ofamino acids H44, P48, A52, D53, L55, S57, N68, S69, V70, insertion of Pafter N71, S72, K73, I74, A77, and V80 with respect to the sequence ofSEQ ID NO:1.

In one embodiment, the designer BMP comprises the following mutations:H44D, P48S, A52N, D53A, L55M, S57A, N68H, S69L, V70M, insertion of a Pafter N71, S72E, K73Y, 174V, A77P, and V80A with respect to the sequenceof SEQ ID NO:1.

In some embodiments the designer BMP comprises mutations at each ofamino acids V33, P36, H39, S85, M89, L92, E94, E96, K97, and V99 withrespect to the sequence of SEQ ID NO:1.

In some embodiments, the designer BMP comprises mutations at each ofamino acids V331, P36K, H39A, S85N, M89, L92F, E94D, E96S, K97N, andV99I with respect to the sequence of SEQ ID NO:1.

In other embodiments, the designer BMP comprises the followingmutations: V331, P36K, H39A, H44D, P48S, A52N, L54M, S56M, N68H, V70M,S72E, K73E, insertion of a Y after K73, I74V, 77AP, S85N, M89V, L92F,E94D, E96S, K97N, and V99I with respect to the sequence of SEQ ID NO:1.

In yet other embodiments, the designer BMP comprises the followingmutations: V331, P36R, H39A, H44D, P48S, A52N, L54M, S56M, N68H, V70M,S72E, K73E, insertion of a Y after K73, I74V, 77AP, S85N, M89V, L92F,E94D, E96S, K97N, and V99I with respect to the sequence of SEQ ID NO:1.

In certain embodiments, the corresponding wild type BMP to the designerBMP is BMP4. In certain embodiments, the at least one mutation withinthe type II receptor binding domain A is at V35, P38, G39, Q41, F43,Y44, and H46 of SEQ ID NO:2.

In other embodiments, the designer BMP4 comprises at least one mutationwithin the type II receptor binding domain A and further comprises atleast one additional mutation within a type I receptor binding domain.The mutation within the type I receptor binding domain is at least onemutation at P50, A54, D55, H56, L57, N58, S59, N61, V65, T67, N70, S71,V72, N73, S74, S75, I76, and P77 of SEQ ID NO:2.

In yet further embodiments, the designer BMP4 comprises at least onemutation within a type II receptor binding domain A, at least onemutation within the type I receptor binding domain, and furthercomprises at least one additional mutation within a type IIB receptorbinding domain. The mutation within the type II receptor binding domainB is at least one mutation at E85, S87, A88, M91, L94, E96, K97, V98 andV99 of SEQ ID NO:2.

In certain embodiments, the corresponding wild type BMP to the designerBMP is BMP5. In certain embodiments, the mutation within the type IIreceptor binding domain A is at least one mutation at I56, E59, G60,A62, F64, Y65, or D67 of SEQ ID NO:3.

In other embodiments, the designer BMP comprises at least one mutationwithin the type II receptor binding domain A and further comprises atleast one additional mutation within a type I receptor binding domain.The mutation within the type I receptor binding domain is at least onemutation at S71, F72, N75, A76, H77, M78, N79, A80, N82, V86, T88, H91,L92, M93, F94, P95, D96, H97, V98, or P99 of SEQ ID NO:3.

In yet further embodiments, the designer BMP comprises at least onemutation within a type II receptor binding domain A, at least onemutation within the type I receptor binding domain, and furthercomprises at least one additional mutation within a type IIB receptorbinding domain. The mutation within the type II receptor binding domainB is at least one mutation at K107, N109, A110, V113, F116, D118, S119,S120, N121, V122, or 1123 of SEQ ID NO:3.

In certain embodiments, the corresponding wild type BMP to the designerBMP is BMP6. In certain embodiments, the mutation within the type IIreceptor binding domain A is at least one mutation at I57, K60, G61,A63, N65, Y66, or D68 of SEQ ID NO:4.

In other embodiments, the designer BMP6 comprises at least one mutationwithin the type II receptor binding domain A and further comprises atleast one additional mutation within a type I receptor binding domain.The mutation within the type I receptor binding domain is at least onemutation at S72, N76, A77, H78, M79, N80, A81, N83, V87, T89, H92, L93,M94, N95, P96, E97, Y98, V99, or P100 of SEQ ID NO:4.

In yet further embodiments, the designer BMP6 comprises at least onemutation within a type II receptor binding domain A, at least onemutation within the type I receptor binding domain, and furthercomprises at least one additional mutation within a type IIB receptorbinding domain. The mutation within the type II receptor binding domainB is at least one mutation at K108, N110, A111, V114, F117, D119, N120,S121, N122, V123, or I124 of SEQ ID NO:4.

In certain embodiments, the corresponding wild type BMP to the designerBMP is BMP7. In certain embodiments, the mutation within the type IIreceptor binding domain A is at least one mutation at I57, E60, G61,A63, Y65, Y66, or E68 of SEQ ID NO:5.

In other embodiments, the designer BMP7 comprises at least one mutationwithin the type II receptor binding domain A and further comprises atleast one additional mutation within a type I receptor binding domain.The mutation within the type I receptor binding domain is at least onemutation at A72, F73, N76, S77, Y78, M79, N80, A81, N83, V87, T89, H92,F93, I94, N95, P96, E97, T98, V99, or P100 of SEQ ID NO:5.

In yet further embodiments, the designer BMP7 comprises at least onemutation within a type II receptor binding domain A, at least onemutation within the type I receptor binding domain, and furthercomprises at least one additional mutation within a type IIB receptorbinding domain. The mutation within the type II receptor binding domainB is at least one mutation at Q108, N110, A111, V114, F117, D119, S120,S121, N122, V123, or I124 of SEQ ID NO:5.

In certain embodiments, the corresponding wild type BMP to the designerBMP is BMP8. In certain embodiments, the mutation within the type IIreceptor binding domain A is at least one mutation at I57, Q60, G61,S63, Y65, Y66, or E68 of SEQ ID NO:6.

In other embodiments, the designer BMP8 comprises at least one mutationwithin the type II receptor binding domain A and further comprises atleast one additional mutation within a type I receptor binding domain.The mutation within the type I receptor binding domain is at least onemutation at S72, F73, D76, S77, C78, M79, N80, A82, N83, L87, S89, H92,L93, M94, M95, P96, D97, A98, V99, or P100 of SEQ ID NO:6.

In yet further embodiments, the designer BMP8 comprises at least onemutation within a type II receptor binding domain A, at least onemutation within the type I receptor binding domain, and furthercomprises at least one additional mutation within a type IIB receptorbinding domain. The mutation within the type II receptor binding domainB is at least one mutation at K108, S110, A111, V114, Y117, D118, S119,S120, N121, N122, V123, or I124 or SEQ ID NO:6

In certain embodiments, the mutation within the type II receptor bindingdomain A is at least one mutation at I27, K30, E31, E33, Y35, or E36 ofSEQ ID NO:7.

In other embodiments, the designer BMP9 comprises at least one mutationwithin the type II receptor binding domain A and further comprises atleast one additional mutation within a type I receptor binding domain.The mutation within the type I receptor binding domain is at least onemutation at F42, F43, A46, D47, D48, V49, T50, P51, K53, V57, T59, H62,L63, K64, F65, P66, T67, K68, V69, or G70 of SEQ ID NO:7.

In yet further embodiments, the designer BMP9 comprises at least onemutation within a type II receptor binding domain A, at least onemutation within the type I receptor binding domain, and furthercomprises at least one additional mutation within a type IIB receptorbinding domain. The mutation within the type II receptor binding domainB is at least one mutation at K78, S80, P81, V84, K87, D89, M90, G91,V92, P93, or T94 of SEQ ID NO:7.

Exemplary amino acid sequences of designer BMPs are set forth in Table7, below. Table 7 shows the name and sequence of the designed molecules.

TABLE 7 SEQ ID NAME SEQUENCE NO BMP-AQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPKGYAANYCHGECPFPLADHLNSTNHAIVQTLVN  8SVNSKIPKACCVPTELSAISMLYLDENEKVVLKNYQDMVVEGCGCR BMP-BQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIVAPPGYHAFYCHGECPFPLADHLNSTNHAIVQTLVN  9SVNSKIPKACCVPTKLNAISVLYFDDNSNVILKNYQDMVVEGCGCR BMP-CQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPKGYAANYCHGECPFPLADHLNSTNHAIVQTLVN 10SVNSKIPKACCVPTKLNAISVLYFDDNSNVILKNYQDMVVEGCGCR BMP-DQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIVAPPGYHAFYCHGECPFPLNAHMNATNHAIVQTLVH 11LMN-SKIPKACCVPTELSAISMLYLDENEKWLKNYQDMWEGCGCR BMP-EQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIVAPPGYHAFYCDGECSFPLNAHMNATNHAIVQTLVH 12LMNPEYVPKPCCAPTELSAISMLYLDENEKVVLKNYODMVVEGCGCR BMP-FQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPKGYAAFYCHGECPFPLADHLNSTNHAIVQTLVN 13SVNSKIPKACCVPTELSAISMLYLDENEKWLKNYQDMWEGCGCR BMP-GQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPKGYAAFYCHGECPFPLADHLNSTNHAIVQTLVN 14SVNSKIPKACCVPTELNAISVLYFDDNSNVILKNYQDMWEGCGCR BMP-HQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPKGYHAFYCHGECPFPLADHLNSTNHAIVQTLVN 15SVNSKIPKACCVPTELNAISVLYFDENSNVVLKKYQDMVVRGCGCR BMP-IQAKHKQRKRLKSSCKRHELYVSFQDLGWQDWIIAPKGYAANYCHGECPFPLADHLNSTNHAIVQTLVN 16SVNSKIPKACCVPTELNAISVLYFDDNSNVILKKYRNMWRACGCR BMP-JQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPKGYHAFYCDGECSFPLNAHMNATNHAIVQTLVH 17LMNPEYVPKPCCAPTELNAISVLYFDENSNWLKKYQDMWRGCGCR BMP-KQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIVAPPGYHAFYCHGECPFPLADHLNSTKHAIVQTLVN 18SVNSKIPKACCVPTELSAISMLYLDENEKWLKNYQDMWEGCGCR BMP-TQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIVAPPGYHAFYCHGECPFPLADHLNSTTHAIVQTLVN 19SVNSKIPKACCVPTELSAISMLYLDENEKWLKNYQDMWEGCGCR BMP-APQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPPGYAANYCHGECPFPLADHLNSTNHAIVQTLVN 20SVNSKIPKACCVPTELSAISMLYLDENEKWLKNYQDMWEGCGCR BMP-ARQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPRGYAANYCHGECPFPLADHLNSTNHAIVQTLVN 21SVNSKIPKACCVPTELSAISMLYLDENEKWLKNYQDMWEGCGCR BMP-AKQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPKGYAANYCHGECPFPLADHLNSTKHAIVQTLVN 22SVNSKIPKACCVPTELSAISMLYLDENEKWLKNYQDMWEGCGCR BMP-ATQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPKGYAANYCHGECPFPLADHLNSTTHAIVQTLVN 23SVNSKIPKACCVPTELSAISMLYLDENEKWLKNYQDMWEGCGCR BMP-DPQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIVAPPGYHAFYCHGECPFPLNAHMNATNHAIVQTLVH 24LMNPSKIPKACCVPTELSAISMLYLDENEKWLKNYQDMWEGCGCR BMP-E9QAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIVAPPGYHAFYCKGGCFFPLADDVTPTKHAIVQTLVH 25LKFPTKVGKACCVPTELSAISMLYLDENEKWLKNYODMWEGCGCR BMP-QAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIVAPPGYHAFYCRGVCNYPLAEHLTPTKHAIIQALVH 26E10 LKNSQKASKACCVPTELSAISMLYLDENEKWLKNYQDMWEGCGCR BMP-EKQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIVAPPGYHAFYCDGECSFPLNAHMNATKHAIVQTLVH 27LMNPEYVPKPCCAPTELSAISMLYLDENEKWLKNYQDMWEGCGCR BMP-ETQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIVAPPGYHAFYCDGECSFPLNAHMNATTHAIVQTLVH 28LMNPEYVPKPCCAPTELSATSMLYLDENEKWLKNYQDMWEGCGCR BMP-RQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIVAPRGYHAFYCHGECPFPLADHLNSTNHAIVQTLVN 29SVNSKIPKACCVPTELSAISMLYLDENEKWLKNYQDMWEGCGCR BMP-G5QAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIVAPPGYHAFYCEGLCEFPLRSHLEPTNHAVIQTLMN 30SMDPESTPPTCCVPTELSAISMLYLDENEKVVLKNYQDMVVEGCGCR BMP-ERQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIVAPRGYHAFYCHGECPFPLADHLNSTNHAIVQTLVK 31SVNSKIPKACCVPTELSATSMLYLDENEKWLKNYQDMWEGCGCR BMP-GPQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPPGYAAFYCHGECPFPLADHLNSTNHAIVQTLVN 32SVNSKIPKACCVPTELNAISVLYFDDNSNVILKNYODMWEGCGCR BMP-GRQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPRGYAAFYCHGECPFPLADHLNSTNHAIVQTLVN 33SVNSKIPKACCVPTELNAISVLYFDDNSNVILKNYQDMWEGCGCR BMP-GKQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPKGYAAFYCHGECPFPLADHLNSTKHAIVQTLVN 34SVNSKIPKACCVPTELNAISVLYFDDNSNVILKNYQDMWEGCGCR BMP-GTQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPKGYAAFYCHGECPFPIADHLNSTTHAIVQTLVN 35SVNSKIPKACCVPTELNAISVLYFDDNSNVILKNYQDMWEGCGCR BMP-GEQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPKGYAAFYCDGECSFPLNAHMNATNHAIVQTLVH 36LMNPEYVPKPCCAPTELNAISVLYFDDNSNVILKNYQDMWEGCGCR BMP-GERQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPRGYAAFYCDGECSFPLNAHMNATNHAIVQTLVH 37LMNPEYVPKPCCAPTELNAISVLYFDDNSNVILKNYQDMWEGCGCR BMP-JPQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPPGYHAFYCDGECSFPLNAHMNATNHAIVQTLVH 38LMNPEYVPKPCCAPTELNAISVLYFDENSNWLKKYQDMWRGCGCR BMP-JRQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPRGYHAFYCDGECSFPLNAHMNATNHAIVQTLVH 39LMNPEYVPKPCCAPTELNAISVLYFDENSNVVLKKYQDMWRGCGCR BMP-JKQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPKGYHAFYCDGECSFPLNAHMNATKHAIVQTLVH 40LMNPEYVPKPCCAPTELNAISVLYFDENSNWLKKYQDMWRGCGCR BMP-JTQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPKGYHAFYCDGECSFPLNAHMNATTHAIVQTLVH 41LMNPEYVPKPCCAPTELNAISVLYFDENSNWLKKYQDMWRGCGCR BMP-A9QAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPKEYEAYECHGECPFPLADHLNSTNHAIVQTLVN 42SVNSKIPKACCVPTELSAISMLYLDENEKVVLKNYQDMVVEGCGCR BMP-B9QAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIVAPPGYHAFYCHGECPFPLADHLNSTNHAIVQTLVN 43SVNSKIPKACCVPTELSPISVLYKDDMGVPTLKNYQDMVVEGCGCR BMP-QAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIVAPPGYHAFYCDGECSFPLNAHMNATNHAIVQTLVH 44E9B LMNPEYVPKPCCAPTELSPISVLYKDDMGVPTLKNYQDMVVEGCGCR. BMP-G9QAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPKEYEAYECHGECPFPLADHLNSTNHAIVQTLVN 45SVNSKIPKACCVPTELSPISVLYKDDMGVPTLKNYQDMVVEGCGCR BMP929QAKHKQRKRLKSSCQKTSLRVNFEDIGWDSWIIAPKEYEAYECHGECPFPLADHLNSTNHAIVQTLVN 46SVNSKIPKACCVPTKLSPISVLYKDDMGVPTLKYHYEGMSVAECGCR BMP969QAKHKQRKRLKSSCQKTSLRVNFEDIGWDSWIIAPKEYEAYECDGECSFPLNAHMNATNHAIVQTLVH 47LMNPEYVPKPCCVPTKLSPISVLYKDDMGVPTLKYHYEGMSVAECGCR BMPQAKQAKHKQRKRLKSSCQKTSLRVNFEDIGWDSWIIAPKEYEAYECKGGCFFPLADDVTPTKHAIVQTLVH 48no LKFPTKVGKACCVPTKLSPISVLYKDDMGVPTLKYHYEGMSVAECGCR SAGA BMP-QAKHKQRKRLKSSSAGAGSHCQKTSLRVNFEDIGWDSWIIAPKEYEAYECKGGCFFPLADDVTPTKHA 49QAKSAGAC IVQTLVHLKFPTKVGKACCVPTKLSPISVLYKDDMGVPTLKYHYEGMSVAECGCR BMP-GEPQAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPPGYAAFYCDGECSFPLNAHMNATNHAIVQTLVH 50LMNPEYVPKPCCAPTELNAISVLYFDDNSNVILKNYQDMVVEGCGCR BMP6-SAVSSASDYNSSELKTACRKHELYVSFQDLGWQDWIIAPKGYAANYCDGECSFPLNAAMNATNHAIVQTL 51VHLMNPEYVPKPCCAPTKLNAISVLYFDDNSNVILKKYRNMVVRACGCH BMP6-SLVSSASDYNSSELKTACRKHELYVSFQDLGWQDWIIAPKGYAANYCDGECSFPLNAHLNATNHAIVQTL 52VHLMNPEYVPKPCCAPTKLNAISVLYFDDNSNVILKKYRNMVVRACGCH BMP6ASASSRRRQQSRNRSTQSQDVARVSSASDYNSSELKTACRKHELYVSFQDLGWQDWIIAPKGYAANYCD 53GECSFPLADHLNSTNHAIVQTLVNSVNPEYVPKPCCAPTKLNAISVLYFDDNSNVILKKYRNMVVRACGCH. BMP6BSASSRRRQQSRNRSTQSQDVARVSSASDYNSSELKTACRKHELYVSFQDLGWQDWIIAPKGYAANYCH 54GECPFPLADHLNSTNHAIVQTLVNSVNSKIPKACCVPTKLNAISVLYFDDNSNVILKKYRNMVVRACG CH.BMP6CSASSRRRQQSRNRSTQSQDVARVSSASDYNSSELKTACRKHELYVSFQDLGWQDWIVAPPGYHAFYCD 55GECSFPLNAHMNATNHAIVQTLVHLMNPEYVPKPCCAPTKLNAISVLYFDDNSNVILKKYRNMVVRACGCH. BMP6DSASSRRRQQSRNRSTQSQDVARVSSASDYNSSELKTACRKHELYVSFQDLGWQDWIIAPKGYAANYCD 56GECSFPLNAHMNATNHAIVQTLVHLMNPEYVPKPCCAPELSAISMLYLDENEKVVLKKYRNMVVRACG CH.BMP6VSSASDYNSSELKTACRKHELYVSFQDLGWQDWIIAPKGYAANYCDGECSFPLADHLNATNHAIVQTL 57ADHL VHLMNPEYVPKPCCAPTKLNAISVLYFDDNSNVILKKYRNMVVRACGCH BMP6-VSSASDYNSSELKTACKRHELYVSFQDLGWQDWIIAPKGYAANYCDGECSFPLNAHMNATNHAIVQTL 58RK-KR VHLMNPEYVPKPCCAPTKLNAISVLYFDDNSNVILKKYRNMVVRACGCH BMP6VSSASDYNSSELKTACKRHELYVSFQDLGWQDWIIAPKGYAANYCDGECSFPLADHLNATNHAIVQTL 59RK-KR VHLMNPEYVPKPCCAPTKLNAISVLYFDDNSNVILKKYRNMVVRACGCH ADHL long BMP6ASASSRRRQQSRNRSTQSQDVARVSSASDYNSSELKTACKRHELYVSFQDLGWQDWIIAPKGYAANYCD 60RK-KRGECSFPLADHLNSTNHAIVQTLVNSVNPEYVPKPCCAPTKLNAISVLYFDDNSNVILKKYRNMVVRAC GCHBMP6SASSRRRQQSRNRSTQSQDVARVSSASDYNSSELKTACRKHELYVSFQDLGWQDWIIAPKGYAANYCD 61ADHLGECSFPLADHLNATNHAIVQTLVHLMNPEYVPKPCCAPTKLNAISVLYFDDNSNVILKKYRNMVVRAClong GCH. BMP6SASSRRRQQSRNRSTQSQDVARVSSASDYNSSELKTACKRHELYVSFQDLGWQDWIIAPKGYAANYCD 62RK-KRGECSFPLADHLNATNHAIVQTLVHLMNPEYVPKPCCAPTKLNAISVLYFDDNSNVILKKYRNMVVRACADHL GCH. BMP6SASSRRRQQSRNRSTQSQDVARVSSASDYNSSELKTACKRHELYVSFQDLGWQDWIIAPKGYAANYCD 63RK-KRGECSFPLNAHMNATNHAIVQTLVHLMNPEYVPKPCCAPTKLNAISVLYFDDNSNVILKKYRNMVVRAClong GCH BMP6B-SASSRRRQQSRNRSTQSQDVARVSSASDYNSSELKTACKRHELYVSFQDLGWQDWIIAPKGYAANYCH 64RK-KRGECPFPLADHLNSTNHAIVQTLVNSVNSKIPKACCVPTKLNAISVLYFDDNSNVILKKYRNMVVRACG CHBMP9E2REKRSAGAGSHCQKTSLRVNFEDIGWDSWIIAPKEYEAYECHGECPFPLADHLNSTNHAIVQTLVNSV 65NSKIPKACCVPTKLSPISVLYKDDMGVPTLKYHYEGMSVAECGCR BMP9E6SAGAGSHCQKTSLRVNFEDIGWDSWIIAPKEYEAYECDGECSFPLNAHMNATNHAIVQTLVHLMNPEY 66VPKPCCAPTKLSPISVLYKDDMGVPTLKYHYEGMSVAECGCR BMP6-VSSASDYNSSELKTACRKHELYVSFQDLGWQDWIIAPKGYAANYCDGECSFPLNAHMNATNHAIVQTL 67Short VHLMNPEYVPKPCCAPTKLNAISVLYFDDNSNVILKKYRNMVVRACGCH BMP6-SAVSSASDYNSSELKTACRKHELYVSFQDLGWQDWIIAPKGYAANYCDGECSFPLNAAMNATNHAIVQTL 68VHLMNPEYVPKPCCAPTKLNAISVLYFDDNSNVILKKYRNMVVRACGCH BMP6-SLVSSASDYNSSELKTACRKHELYVSFQDLGWQDWIIAPKGYAANYCDGECSFPLNAHLNATNHAIVQTL 69VHLMNPEYVPKPCCAPTKLNAISVLYFDDNSNVILKKYRNMVVRACGCH BMP-E-QAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIVAPPGYHAFYCDGECSFPLNAHMNATNHAIVQTLVH 70NR LMNPEYVPKPCCAPTKLRPMSMLYYDDGQNIIKKDIQNMIVEECGCS BMP-QAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPRGYAAFYCDGECSFPLNAHMNATNHAIVQTLVH 71GER-NR LMNPEYVPKPCCAPTKLRPMSMLYYDDGQNIIKKDIQNMIVEECGCS BMP-E-QAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIVAPPGYHAFYCDGECSFPLNAHMNATNHAIVQTLVH 72NR-6 LMNPEYVPKPCCAPTKLNAISVLYFDDNSNVILKKYRNMVVRACGCH BMP-GER-QAKHKQRKRLKSSCKRHPLYVDFSDVGWNDWIIAPRGYAAFYCDGECSFPLNAHMNATNHAIVQTLVH 73NR-6 LMNPEYVPKPCCAPTKLNAISVLYFDDNSNVILKKYRNMVVRACGCH

Although the above listed designer BMPs comprise embodiments of theinvention, the invention is not limited in any way to any specificmolecules. Instead, the invention encompasses any designer BMPcomprising altered receptor binding where the designer BMP comprises atleast one mutation within a type II receptor binding domain A, even morepreferably, the designer BMP comprises at least one further mutationwithin a type I receptor binding domain, most preferably, the designerBMP comprises yet another at least one further mutation within a type IIreceptor binding domain B.

In other embodiments, the designer BMP of the present inventioncomprises an amino acid sequence at least about 70%, 75%, 80%, 85%, 87%,90%, 92%, 95%, 96%, 97%, 98%, 99% or identical to one of the sequencesdescribed above. In another embodiment, the designer BMP comprises anamino acid sequence at least about 70%, 75%, 80%, 85%, 87%, 90%, 92%,95%, 96%, 97%, 98%, 99% or identical to the sequence of SEQ ID NOs:8-73.

In yet another embodiment, the designer BMP comprises an amino acidsequence as set forth in any one of SEQ ID NOs:8-73. In anotherembodiment, the amino acid sequence of the designer BMP consists of oneof the sequences of SEQ ID NOs:8-73.

Further, in one embodiment, the designer BMP comprises an amino acidsequence at least about 70%, 75%, 80%, 85%, 87%, 90%, 92%, 95%, 96%,97%, 98%, 99% or identical to the sequence of SEQ ID NO:12. In anotherembodiment, the amino acid sequence is the sequence of SEQ ID NO:12. Inyet another embodiment, the designer BMP is BMPE.

In an additional embodiment, the designer BMP comprises an amino acidsequence at least about 70%, 75%, 80%, 85%, 87%, 90%, 92%, 95%, 96%,97%, 98%, 99% or identical to the sequence of SEQ ID NO:14. In anotherembodiment, the amino acid sequence is the sequence of SEQ ID NO:14. Inyet another embodiment, the designer BMP is BMPG.

In another embodiment, the designer BMP comprises an amino acid sequenceat least about 70%, 75%, 80%, 85%, 87%, 90%, 92%, 95%, 96%, 97%, 98%,99% or identical to the sequence of SEQ ID NO:36. In another embodiment,the amino acid sequence is the sequence of SEQ ID NO:36. In yet anotherembodiment, the designer BMP is BMPGE.

In another embodiment, the designer BMP comprises an amino acid sequenceat least about 70%, 75%, 80%, 85%, 87%, 90%, 92%, 95%, 96%, 97%, 98%,99% or identical to the sequence of SEQ ID NO:37. In another embodiment,the amino acid sequence is the sequence of SEQ ID NO:37. In yet anotherembodiment, the designer BMP is BMPGER.

A designer BMP of the invention may comprise a fragment of any one ofthe sequences described above. In an embodiment, a designer BMP fragmentmay comprise a fragment of at least an uninterrupted 20, 22, 24, 25, 26,27, 28, 30, 32, 33, 34, 35, 36, 37, 38, 40, 41, 43, 44, 45, 47, 50, 53,54, 56, 58, 60, 62, 66, 68, 70, 71, 74, 77, 80, 83, 85, 88, 90, 91, 93,95, 97, 99, 100, 102, 105, 108, 110, 112, 115, 117, 119, 120, 121, 122,or 125 amino acid sequence from the sequence of any one of the sequencesof SEQ ID NOs:8-73.

It is well known in the art that BMPs are often heterogeneous withrespect to the amino and/or carboxyl termini of the protein. That is,the present invention comprises a designer BMP comprising an amino aciddeletion/truncation at the amino and/or carboxyl terminus comprising adeletion of at least 10 amino acid residues, preferably, 9 amino acidresidues, even more preferably, 8 amino acid residues, yet morepreferably, 7 amino acid residues, preferably 6 amino acid residues,even more preferably, 5 amino acid residues, preferably 4 amino acidresidues, more preferably 3 amino acid residues, even more preferably 2amino acid residues, and most preferably 1 amino acid reside from the Cand or N terminus of the designer BMP.

In another embodiment, the invention comprises a designer BMP proteincomprising an amino acid sequence of any one of the sequences of SEQ IDNO:8-73 and further comprising a deletion/truncation from the aminoand/or carboxyl termini of the protein. In another embodiment, theinvention comprises a designer BMP protein derived from a BMP proteincomprising an amino acid sequence of any of the sequences of SEQ IDNOs:8-73, wherein the protein comprises an amino aciddeletion/truncation at the amino and/or carboxyl terminus comprising adeletion of at least 10 amino acid residues, preferably, 9 amino acidresidues, even more preferably, 8 amino acid residues, yet morepreferably, 7 amino acid residues, preferably 6 amino acid residues,even more preferably, 5 amino acid residues, preferably 4 amino acidresidues, more preferably 3 amino acid residues, even more preferably 2amino acid residues, and most preferably 1 amino acid reside from the Cand or N terminus of the designer BMP protein amino acid sequence.

Structural Design of BMPs with Altered Receptor Affinity Mediated byGlycosylation

The data disclosed herein demonstrate that BMP2 homodimers produced inE. coli (referred to herein as “E. coli BMP2”), which are notglycosylated, are less active than glycosylated BMP2 produced inmammalian cells, such as CHO cells (referred to herein as “CHO BMP2”).In addition, data disclosed herein further demonstrate that E. coliproduced BMP6 homodimers are essentially non-functional compared withBMP6 homodimers produced in mammalian cell culture.

The data disclosed herein demonstrate that there are significantvariations in the crystal structure of E. coli BMP2 compared with CHOBMP2 in the type I receptor binding region.

In one embodiment, the designer BMP comprises an altered conformationmediated by glycosylation thereby affecting a binding motif that, inturn, mediates altered binding to a type I receptor. This is based onthe present discovery that in mammalian (e.g., CHO) cell produced wildtype BMP2, D53 points towards the receptor interface while the H54points away from the receptor. This is in contrast to E. coli-producedBMP2 where the D53 residue points away from the receptor interface andthe H54 residue lines up toward the receptor, stacking against a prolinereside as illustrated in FIG. 3, apparently acting as a “doorstop.” Inaddition, the data disclosed herein demonstrate for the first time thatCHO-produced BMP6, which is fully glycosylated and active, alsocomprises a histidine residue pointing toward the incoming receptor,i.e., a histidine “doorstop.”

Without wishing to be bound by any particular theory, the data disclosedherein suggest, for the first time, that moving a “doorstop” residueaway from the receptor interface, can mediate increased binding betweenthe BMP ligand and its receptor. The data further demonstrate that thedoorstop residue may be either mutated itself to remove the doorstop orother residues may be mutated to shift the position of the doorstopresidue. Further, the data disclosed herein further demonstrate thatother residues may be mutated to provide a “glycan tether” which then,in turn, can orient a glycan such that the tethering of the glycan willreorient the doorstop residue.

Therefore, in some embodiments, a designer BMP can be produced byincorporating at least one amino acid mutation that affects the glycantether and/or removes a histidine doorstop structure thereby providing adesigner BMP with altered receptor binding.

In summary, in some embodiments, the designer BMPs of the invention maycomprise at least one mutation in the type I and/or type II bindingdomains of BMPs that confer altered type I and/or type II receptorbinding. In one embodiment, the BMP sequence is engineered to alter thereceptor affinity of BMPs in order to alter and improve the receptorbinding and/or osteogenic activity of the engineered or “designer” BMP.In one embodiment, this engineering involves identifying the residuesinvolved in type I and type II receptor binding and replacing them tocreate designer BMP molecules that show, among other things, higheraffinity to both type I and type II receptors than the parental BMP fromwhich the designer is derived.

In other embodiments, the designer BMPs of the invention comprisemutations that create a new arginine “glycan tether” or destroy anexisting one to reshape the type I receptor binding domain. That is, themutation to an arginine in the position two residues C-terminal from thefirst cysteine, equivalent to R16 of BMP2, appears to cause the glycanchain to be “tethered” onto the BMP surface and consequently alter theconformation of the pre-helical loop region compared with the wild typeBMP that lacks the mutation. In other embodiments, the designer BMP ofthe invention may comprise at least one mutation that alters, creates ordestroys (abolishes) the “doorstop” residue that blocks type I receptorfrom further engagement with BMP. That is, the mutation of H54 in thedesigner BMP, or a corresponding equivalent residue thereof, that isoriented in such a way that it impedes or increases interaction of thedesigner BMP with a type I receptor.

In some embodiments, the amino acid mutation affects the conformation ofthe designer BMP such that the mutation mediates the creation and orabolishment of an arginine “glycan tether” otherwise present in thecorresponding wild type BMP. In some embodiments, the mutation mediatesan altered conformation which creates or removes/abolishes a histidinedoorstop conformation in the designer BMP where such doorstopconformation is either not present or active, respectively, in thecorresponding wild type BMP.

Therefore, the skilled artisan, once armed with the teachings providedherein, would appreciate that the presence or absence of an arginine“glycan tether” and/or a histidine “doorstop” in a TGFβ superfamilymember may be assessed using any method known in the art for thestructural analysis of proteins, including, but not limited to, themethods exemplified herein. Once the presence of a “doorstop” residuehas been identified, then at least one mutation can be introduced intothe molecule to reorient the histidine away from the receptor bindinginterface. Alternatively, a mutation can be introduced that will createor enhance a “glycan tether” such that the inhibitory effect of thehistidine “doorstop”, if present, is decreased or, more preferably,eliminated.

In one embodiment, where the TGFβ superfamily member is BMP2, themutation that removes the histidine doorstop is substitution of anotheramino acid for H54. In some embodiments, the H54 is replaced withalanine, glycine, serine, or threonine.

Although the present invention discloses such “doorstop”-removingmutations for BMP2, the skilled artisan would understand, based on theknowledge in the art, how to identify corresponding mutations for otherTGFβ superfamily members and readily produce mutants lacking a“doorstop,” i.e., removing or reorienting a residue that would otherwiseinterfere with receptor binding by facing or projecting into the bindinginterface. The effects of the mutation on protein conformation can bedetermined using any art-recognized method for the structural analysisof proteins such as, but not limited to, those disclosed herein.Alternatively, mutations that can remove the doorstop and increaseligand binding to the type I receptor can be identified in silico usingcomputer modeling methods available in the art. Therefore, the presentinvention encompasses the design of TGFβ superfamily members havingimproved binding with the type I receptor in that they lack a histidine“doorstop” residue that would otherwise be present in the receptorinterface.

The present invention further provides the skilled artisan with theunderstanding of how to identify mutations for other TGFβ family membersthat would generate or destroy the arginine glycan tether. Mutationsthat add the arginine glycan tether to a protein lacking the tether arecontemplated by the instant invention. Therefore, the present inventionencompasses the design of TGFβ superfamily members having improvedbinding with the type I receptor in that they contain an arginine glycantether that alters the conformation of the type I receptor bindingdomain.

In some embodiments, the removal of the histidine doorstop therebyremoving the requirement of a glycan tether, provides a designer BMPthat can be produced without glycosylation while maintaining biologicalactivity. For example, designer BMPs may be produced in cells withglycosylation activity that differs from mammalian cells or is notpresent, such as bacterial cells, yeast cells, insect cells, or slimemold cells. In particular embodiments, the designer BMPs may be producedin E. coli and maintain biological activity.

Thus, in some embodiments, the invention provides methods for designingand producing BMPs that can be produced in cells either lackingglycosylation or comprising altered glycosylation such that an alteredglycan is produced which differs from that produced by a mammalian cell.That is, the present invention encompasses methods for introducing amutation that removes a doorstop residue that would otherwise impair orinhibit receptor binding. The skilled artisan would understand onceprovided with the teachings of the invention that a doorstop residuethat impinges upon the receptor-ligand interface may be mutated toentirely remove the residue or other mutations can be introduced suchthat the residue is oriented away from the interface. Such othermutations include, but are not limited to, providing a glycan tetherthat will alter the conformation of a glycan and thereby alter theconformation of the ligand such that the doorstop residue is orientatedaway from the binding interface.

Nucleic Acids Encoding Designer BMPs

The invention also includes nucleic acids encoding designer the BMPsdescribed herein. Nucleic acids encoding the designer BMPs describedherein can be prepared according to a wide plethora of methods known inthe art.

In one, nucleic acids encoding designer BMPs are prepared by total genesynthesis, or by site-directed mutagenesis of a nucleic acid encodingwild type or modified BMPs. Methods including template-directedligation, recursive PCR, cassette mutagenesis, site-directed mutagenesisor other techniques that are well known in the art may be utilized (seefor example Strizhov et al., Proc. Natl. Acad. Sci. USA 93:15012-15017(1996); Prodromou and Perl, Prot. Eng. 5: 827-829 (1992); Jayaraman andPuccini, Biotechniques 12: 392-398 (1992); and Chalmers et al.,Biotechniques 30: 249-252 (2001)).

Thus, embodiments of the present invention can comprise nucleic acidmolecules that encode the designer BMPs of the present invention. Incertain embodiments, the invention provides a nucleic acid molecule thatencodes for one of the amino acid sequences of SEQ ID NOs:8 to 66.

In other embodiments, the nucleic acid molecule encodes a designer BMPprotein that comprises an amino acid sequence at least 70%, 75%, 80%,85%, 87%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99% identical to theamino acid sequence of SEQ ID NO:12. In some embodiments, the nucleicacid molecule encodes a designer BMP protein that comprises the aminoacid sequence of SEQ ID NO:12. In another embodiment, the nucleic acidmolecule encodes the amino acid sequence of BMPE as set forth in Table8.

In other embodiments, the nucleic acid molecule encodes a designer BMPprotein that comprises an amino acid sequence at least 70%, 75%, 80%,85%, 87%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99% identical to theamino acid sequence of SEQ ID NO:14. In some embodiments, the nucleicacid molecule encodes a designer BMP protein that comprises the aminoacid sequence of SEQ ID NO:14. In another embodiment, the nucleic acidmolecule encodes the amino acid sequence of BMPG as set forth in Table8.

In other embodiments, the nucleic acid molecule encodes a designer BMPprotein that comprises an amino acid sequence at least 70%, 75%, 80%,85%, 87%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99% identical to theamino acid sequence of SEQ ID NO:36. In some embodiments, the nucleicacid molecule encodes a designer BMP protein that comprises the aminoacid sequence of SEQ ID NO:36. In another embodiment, the nucleic acidmolecule encodes the amino acid sequence of BMPGE as set forth in Table8.

In other embodiments, the nucleic acid molecule encodes a designer BMPprotein that comprises an amino acid sequence at least 70%, 75%, 80%,85%, 87%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99% identical to theamino acid sequence of SEQ ID NO:37. In some embodiments, the nucleicacid molecule encodes a designer BMP protein that comprises the aminoacid sequence of SEQ ID NO:37. In another embodiment, the nucleic acidmolecule encodes the amino acid sequence of BMPGER as set forth in Table8.

Exemplary nucleotide sequences encoding designer BMPs are set forth inTable 8, below. Table 8 shows the name of the protein encoded and thenucleotide sequence encoding that protein. In general, the matureprotein coding sequence begins at nucleotide 847 of the sequences listedbelow.

TABLE 8 SEQ ID NAME SEQUENCE NO BMP-AATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  74CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTATTGCACCCAAGGGCTATGCTGCCAATTACTGCCACGGAGAATGCCCTTTTCCTCTGGCTGATCATCTGAACTCCACTAATCATGCCATTGTTCAGACGTTGGTCAACTCTGTTAACTCTAAGATTCCTAAGGCATGCTGTGTCCCGACAGAACTCAGTGCTATCTCGATGCTGTACCTTGACGAGAATGAAAAGGTTGTATTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTGA BMP-BATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  75CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTGTGGCTCCCCCGGGGTATCACGCCTTTTACTGCCACGGAGAATGCCCTTTTCCTCTGGCTGATCATCTGAACTCCACTAATCATGCCATTGTTCAGACGTTGGTCAACTCTGTTAACTCTAAGATTCCTAAGGCATGCTGTGTCCCGACAAAGCTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTTTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTGA BMP-CATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  76CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTATTGCACCCAAGGGCTATGCTGCCAATTACTGCCACGGAGAATGCCCTTTTCCTCTGGCTGATCATCTGAACTCCACTAATCATGCCATTGTTCAGACGTTGGTCAACTCTGTTAACTCTAAGATTCCTAAGGCATGCTGTGTCCCGACAAAGCTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTTTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTGA BMP-DATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  77CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTGTGGCTCCCCCGGGGTATCACGCCTTTTACTGCCACGGAGAATGCCCTTTTCCACTCAACGCACACATGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACTCTAAGATTCCTAAGGCATGCTGTGTCCCGACAGAACTCAGTGCTATCTCGATGCTGTACCTTGACGAGAATGAAAAGGTTGTATTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTGA BMP-EATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  78CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTGTGGCTCCCCCGGGGTATCACGCCTTTTACTGCGATGGAGAATGCTCCTTCCCACTCAACGCACACATGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCGACAGAACTCAGTGCTATCTCGATGCTGTACCTTGACGAGAATGAAAAGGTTGTATTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTGA BMP-FATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  79CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTATTGCACCCAAGGGCTATGCTGCCTTTTACTGCCACGGAGAATGCCCTTTTCCTCTGGCTGATCATCTGAACTCCACTAATCATGCCATTGTTCAGACGTTGGTCAACTCTGTTAACTCTAAGATTCCTAAGGCATGCTGTGTCCCGACAGAACTCAGTGCTATCTCGATGCTGTACCTTGACGAGAATGAAAAGGTTGTATTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTGA BMP-GATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  80CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTATTGCACCCAAGGGCTATGCTGCCTTTTACTGCCACGGAGAATGCCCTTTTCCTCTGGCTGATCATCTGAACTCCACTAATCATGCCATTGTTCAGACGTTGGTCAACTCTGTTAACTCTAAGATTCCTAAGGCATGCTGTGTCCCGACAGAACTCAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTTTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTGA BMP-HATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  81CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTATTGCTCCCAAGGGGTATCACGCCTTTTACTGCCACGGAGAATGCCCTTTTCCTCTGGCTGATCATCTGAACTCCACTAATCATGCCATTGTTCAGACGTTGGTCAACTCTGTTAACTCTAAGATTCCTAAGGCATGCTGTGTCCCGACAGAACTCAATGCTATCTCGGTTCTGTACTTTGACGAGAATTCCAATGTTGTATTAAAGAAATATCAGGACATGGTTGTGAGAGGTTGTGGGTGTCGCTGA BMP-IATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  82CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACGAGCTGTATGTGAGTTTCCAAGACCTGGGATGGCAGGACTGGATCATTGCACCCAAGGGCTATGCTGCCAATTACTGCCACGGAGAATGCCCTTTTCCTCTGGCTGATCATCTGAACTCCACTAATCATGCCATTGTTCAGACGTTGGTCAACTCTGTTAACTCTAAGATTCCTAAGGCATGCTGTGTCCCGACAGAACTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTCTGAAAAAATACAGGAATATGGTTGTAAGAGCTTGTGGGTGTCGCTGA BMP-JATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  83CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTATTGCTCCCAAGGGGTATCACGCCTTTTACTGCGATGGAGAATGCTCCTTCCCACTCAACGCACACATGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCGACAGAACTCAATGCTATCTCGGTTCTGTACTTTGACGAGAATTCCAATGTTGTATTAAAGAAATATCAGGACATGGTTGTGAGAGGTTGTGGGTGTCGCTGA BMP-KATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  84CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTGTGGCTCCCCCGGGGTATCACGCCTTTTACTGCCACGGAGAATGCCCTTTTCCTCTGGCTGATCATCTGAACTCCACTAAACATGCCATTGTTCAGACGTTGGTCAACTCTGTTAACTCTAAGATTCCTAAGGCATGCTGTGTCCCGACAGAACTCAGTGCTATCTCGATGCTGTACCTTGACGAGAATGAAAAGGTTGTATTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTAG BMP-TATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  85CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTGTGGCTCCCCCGGGGTATCACGCCTTTTACTGCCACGGAGAATGCCCTTTTCCTCTGGCTGATCATCTGAACTCCACTACTCATGCCATTGTTCAGACGTTGGTCAACTCTGTTAACTCTAAGATTCCTAAGGCATGCTGTGTCCCGACAGAACTCAGTGCTATCTCGATGCTGTACCTTGACGAGAATGAAAAGGTTGTATTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTAG BMP-APATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  86CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTATTGCACCCCCGGGCTATGCTGCCAATTACTGCCACGGAGAATGCCCTTTTCCTCTGGCTGATCATCTGAACTCCACTAATCATGCCATTGTTCAGACGTTGGTCAACTCTGTTAACTCTAAGATTCCTAAGGCATGCTGTGTCCCGACAGAACTCAGTGCTATCTCGATGCTGTACCTTGACGAGAATGAAAAGGTTGTATTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTGA BMP-ARATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  87CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTATTGCACCCAGGGGCTATGCTGCCAATTACTGCCACGGAGAATGCCCTTTTCCTCTGGCTGATCATCTGAACTCCACTAATCATGCCATTGTTCAGACGTTGGTCAACTCTGTTAACTCTAAGATTCCTAAGGCATGCTGTGTCCCGACAGAACTCAGTGCTATCTCGATGCTGTACCTTGACGAGAATGAAAAGGTTGTATTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTGA BMP-AKATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  88CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTATTGCACCCAAGGGCTATGCTGCCAATTACTGCCACGGAGAATGCCCTTTTCCTCTGGCTGATCATCTGAACTCCACTAAACATGCCATTGTTCAGACGTTGGTCAACTCTGTTAACTCTAAGATTCCTAAGGCATGCTGTGTCCCGACAGAACTCAGTGCTATCTCGATGCTGTACCTTGACGAGAATGAAAAGGTTGTATTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTGA BMP-ATATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  89CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTATTGCACCCAAGGGCTATGCTGCCAATTACTGCCACGGAGAATGCCCTTTTCCTCTGGCTGATCATCTGAACTCCACTACTCATGCCATTGTTCAGACGTTGGTCAACTCTGTTAACTCTAAGATTCCTAAGGCATGCTGTGTCCCGACAGAACTCAGTGCTATCTCGATGCTGTACCTTGACGAGAATGAAAAGGTTGTATTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTGA BMP-DPATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  90CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTGTGGCTCCCCCGGGGTATCACGCCTTTTACTGCCACGGAGAATGCCCTTTTCCACTCAACGCACACATGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCTCTAAGATTCCTAAGGCATGCTGTGTCCCGACAGAACTCAGTGCTATCTCGATGCTGTACCTTGACGAGAATGAAAAGGTTGTATTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTGA BMP-E9ATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  91CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTGTGGCTCCCCCGGGGTATCACGCCTTTTACTGCAAGGGCGGCTGCTTCTTCCCCTTGGCTGACGATGTGACGCCGACGAAACACGCTATCGTGCAGACCCTGGTGCATCTCAAGTTCCCCACAAAGGTGGGCAAGGCCTGCTGTGTCCCGACAGAACTCAGTGCTATCTCGATGCTGTACCTTGACGAGAATGAAAAGGTTGTATTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTAG BMP-ATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  92E10 CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTGTGGCTCCCCCGGGGTATCACGCCTTTTACTGCCGTGGTGTTTGTAACTACCCCCTGGCAGAGCATCTCACACCCACAAAGCATGCAATTATCCAGGCCTTGGTCCACCTCAAGAATTCCCAGAAAGCTTCCAAAGCCTGCTGTGTCCCGACAGAACTCAGTGCTATCTCGATGCTGTACCTTGACGAGAATGAAAAGGTTGTATTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTAG BMP-EKATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  93CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTGTGGCTCCCCCGGGGTATCACGCCTTTTACTGCGATGGAGAATGCTCCTTCCCACTCAACGCACACATGAATGCAACCAAACACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCGACAGAACTCAGTGCTATCTCGATGCTGTACCTTGACGAGAATGAAAAGGTTGTATTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTGA BMP-ETATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  94CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTGTGGCTCCCCCGGGGTATCACGCCTTTTACTGCGATGGAGAATGCTCCTTCCCACTCAACGCACACATGAATGCAACCACCCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCGACAGAACTCAGTGCTATCTCGATGCTGTACCTTGACGAGAATGAAAAGGTTGTATTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTGA BMP-RATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  95CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTGTGGCTCCCAGGGGGTATCACGCCTTTTACTGCCACGGAGAATGCCCTTTTCCTCTGGCTGATCATCTGAACTCCACTAATCATGCCATTGTTCAGACGTTGGTCAACTCTGTTAACTCTAAGATTCCTAAGGCATGCTGTGTCCCGACAGAACTCAGTGCTATCTCGATGCTGTACCTTGACGAGAATGAAAAGGTTGTATTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTAG BMP-G5ATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  96CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTGTGGCTCCCCCGGGGTATCACGCCTTTTACTGCGAGGGGCTGTGCGAGTTCCCATTGCGCTCCCACCTGGAGCCCACGAATCATGCAGTCATCCAGACCCTGATGAACTCCATGGACCCCGAGTCCACACCACCCACCTGCTGTGTCCCGACAGAACTCAGTGCTATCTCGATGCTGTACCTTGACGAGAATGAAAAGGTTGTATTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTAG BMP-ERATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  97CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTGTGGCTCCCAGGGGGTATCACGCCTTTTACTGCGATGGAGAATGCTCCTTCCCACTCAACGCACACATGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCGACAGAACTCAGTGCTATCTCGATGCTGTACCTTGACGAGAATGAAAAGGTTGTATTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTGA BMP-GPATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  98CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTATTGCACCCCCGGGCTATGCTGCCTTTTACTGCCACGGAGAATGCCCTTTTCCTCTGGCTGATCATCTGAACTCCACTAATCATGCCATTGTTCAGACGTTGGTCAACTCTGTTAACTCTAAGATTCCTAAGGCATGCTGTGTCCCGACAGAACTCAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTTTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTGA BMP-ATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG  99GR CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTATTGCACCCAGGGGCTATGCTGCCTTTTACTGCCACGGAGAATGCCCTTTTCCTCTGGCTGATCATCTGAACTCCACTAATCATGCCATTGTTCAGACGTTGGTCAACTCTGTTAACTCTAAGATTCCTAAGGCATGCTGTGTCCCGACAGAACTCAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTTTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTGA BMP-GKATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG 100CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTATTGCACCCAAGGGCTATGCTGCCTTTTACTGCCACGGAGAATGCCCTTTTCCTCTGGCTGATCATCTGAACTCCACTAAACATGCCATTGTTCAGACGTTGGTCAACTCTGTTAACTCTAAGATTCCTAAGGCATGCTGTGTCCCGACAGAACTCAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTTTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTGA BMP-GTATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG 101CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTATTGCACCCAAGGGCTATGCTGCCTTTTACTGCCACGGAGAATGCCCTTTTCCTCTGGCTGATCATCTGAACTCCACTACTCATGCCATTGTTCAGACGTTGGTCAACTCTGTTAACTCTAAGATTCCTAAGGCATGCTGTGTCCCGACAGAACTCAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTTTAAAGAACTATCAGGACATGGTTGTGGAGGGTTGTGGGTGTCGCTGA BMP-GEATGGTGGCTGGCACCAGATGTCTGCTGGCCCTGCTGCTGCCCCAGGTGCTGCTGGGCGGAGCTGCTGG 102ACTGGTGCCCGAGCTGGGCAGAAGAAAGTTCGCCGCTGCCTCCTCTGGCCGGCCTTCCAGCCAGCCTTCCGACGAGGTGCTGTCCGAGTTCGAGCTGCGGCTGCTGTCCATGTTCGGCCTGAAGCAGCGGCCCACCCCTTCTAGGGACGCCGTGGTGCCCCCCTACATGCTGGACCTGTACCGGCGGCACTCCGGCCAGCCTGGATCTCCTGCCCCCGACCACAGACTGGAAAGAGCCGCCTCCCGGGCCAACACCGTGCGGTCTTTCCACCACGAGGAATCCCTGGAAGAACTGCCCGAGACATCCGGCAAGACCACCCGGCGGTTCTTTTTCAACCTGTCATCCATCCCCACCGAAGAGTTCATCACCTCCGCCGAGCTGCAGGTGTTCCGCGAGCAGATGCAGGACGCCCTGGGCAACAACTCCTCCTTCCACCACCGGATCAACATCTACGAGATCATCAAGCCCGCCACCGCCAACTCCAAGTTCCCCGTGACCCGGCTGCTGGACACCCGGCTGGTGAACCAGAACGCCTCCAGATGGGAGTCCTTCGACGTGACCCCTGCCGTGATGAGATGGACCGCCCAGGGCCACGCCAACCACGGCTTTGTGGTGGAAGTGGCCCACCTGGAAGAGAAGCAGGGCGTGTCCAAGCGGCACGTGCGGATCTCTCGGTCCCTGCACCAGGACGAGCACAGCTGGTCCCAGATCCGGCCCCTGCTGGTGACATTCGGCCACGATGGCAAGGGCCACCCCCTGCACAAGAGAGAGAAGCGGCAGGCCAAGCACAAGCAGCGGAAGCGGCTGAAGTCCTCCTGCAAGCGGCACCCCCTGTACGTGGACTTCTCCGACGTGGGCTGGAACGACTGGATCATTGCCCCCAAGGGCTACGCCGCCTTCTACTGCGACGGCGAGTGCTCCTTCCCCCTGAACGCCCACATGAACGCCACCAACCACGCCATCGTGCAGACCCTGGTGCACCTGATGAACCCCGAGTACGTGCCCAAGCCTTGTTGCGCCCCCACCGAGCTGAACGCCATCTCCGTGCTGTACTTCGACGACAACTCCAACGTGATCCTGAAGAACTACCAGGACATGGTGGTCGAAGGCTGCGGCTGTAGATGA BMP-ATGGTGGCTGGCACCAGATGTCTGCTGGCCCTGCTGCTGCCCCAGGTGCTGCTGGGCGGAGCTGCTGG 103GER ACTGGTGCCCGAGCTGGGCAGAAGAAAGTTCGCCGCTGCCTCCTCTGGCCGGCCTTCCAGCCAGCCTTCCGACGAGGTGCTGTCCGAGTTCGAGCTGCGGCTGCTGTCCATGTTCGGCCTGAAGCAGCGGCCCACCCCTTCTAGGGACGCCGTGGTGCCCCCCTACATGCTGGACCTGTACCGGCGGCACTCCGGCCAGCCTGGATCTCCTGCCCCCGACCACAGACTGGAAAGAGCCGCCTCCCGGGCCAACACCGTGCGGTCTTTCCACCACGAGGAATCCCTGGAAGAACTGCCCGAGACATCCGGCAAGACCACCCGGCGGTTCTTTTTCAACCTGTCATCCATCCCCACCGAAGAGTTCATCACCTCCGCCGAGCTGCAGGTGTTCCGCGAGCAGATGCAGGACGCCCTGGGCAACAACTCCTCCTTCCACCACCGGATCAACATCTACGAGATCATCAAGCCCGCCACCGCCAACTCCAAGTTCCCCGTGACCCGGCTGCTGGACACCCGGCTGGTGAACCAGAACGCCTCCAGATGGGAGTCCTTCGACGTGACCCCTGCCGTGATGAGATGGACCGCCCAGGGCCACGCCAACCACGGCTTTGTGGTGGAAGTGGCCCACCTGGAAGAGAAGCAGGGCGTGTCCAAGCGGCACGTGCGGATCTCTCGGTCCCTGCACCAGGACGAGCACAGCTGGTCCCAGATCCGGCCCCTGCTGGTGACATTCGGCCACGATGGCAAGGGCCACCCCCTGCACAAGAGAGAGAAGCGGCAGGCCAAGCACAAGCAGCGGAAGCGGCTGAAGTCCTCCTGCAAGCGGCACCCCCTGTACGTGGACTTCTCCGACGTGGGCTGGAACGACTGGATCATTGCCCCCAGGGGCTACGCCGCCTTCTACTGCGACGGCGAGTGCTCCTTCCCCCTGAACGCCCACATGAACGCCACCAACCACGCCATCGTGCAGACCCTGGTGCACCTGATGAACCCCGAGTACGTGCCCAAGCCTTGTTGCGCCCCCACCGAGCTGAACGCCATCTCCGTGCTGTACTTCGACGACAACTCCAACGTGATCCTGAAGAACTACCAGGACATGGTGGTCGAAGGCTGCGGCTGTAGATGA BMP-JPATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG 104CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTATTGCTCCCCCGGGGTATCACGCCTTTTACTGCGATGGAGAATGCTCCTTCCCACTCAACGCACACATGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCGACAGAACTCAATGCTATCTCGGTTCTGTACTTTGACGAGAATTCCAATGTTGTATTAAAGAAATATCAGGACATGGTTGTGAGAGGTTGTGGGTGTCGCTGA BMP-JRATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG 105CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTATTGCTCCCAGGGGGTATCACGCCTTTTACTGCGATGGAGAATGCTCCTTCCCACTCAACGCACACATGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCGACAGAACTCAATGCTATCTCGGTTCTGTACTTTGACGAGAATTCCAATGTTGTATTAAAGAAATATCAGGACATGGTTGTGAGAGGTTGTGGGTGTCGCTGA BMP-JKATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG 106CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTATTGCTCCCAAGGGGTATCACGCCTTTTACTGCGATGGAGAATGCTCCTTCCCACTCAACGCACACATGAATGCAACCAAACACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCGACAGAACTCAATGCTATCTCGGTTCTGTACTTTGACGAGAATTCCAATGTTGTATTAAAGAAATATCAGGACATGGTTGTGAGAGGTTGTGGGTGTCGCTGA BMP-JTATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG 107CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTATTGCTCCCAAGGGGTATCACGCCTTTTACTGCGATGGAGAATGCTCCTTCCCACTCAACGCACACATGAATGCAACCACCCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCGACAGAACTCAATGCTATCTCGGTTCTGTACTTTGACGAGAATTCCAATGTTGTATTAAAGAAATATCAGGACATGGTTGTGAGAGGTTGTGGGTGTCGCTGA BMP-A9ATGGTGGCTGGCACCAGATGTCTGCTGGCCCTGCTGCTGCCCCAGGTGCTGCTGGGCGGAGCTGCTGG 108ACTGGTGCCCGAGCTGGGCAGAAGAAAGTTCGCCGCTGCCTCCTCTGGCCGGCCTTCCAGCCAGCCTTCCGACGAGGTGCTGTCCGAGTTCGAGCTGCGGCTGCTGTCCATGTTCGGCCTGAAGCAGCGGCCCACCCCTTCTAGGGACGCCGTGGTGCCCCCCTACATGCTGGACCTGTACCGGCGGCACTCCGGACAGCCTGGATCTCCTGCCCCCGACCACAGACTGGAAAGAGCCGCCTCCCGGGCCAACACCGTGCGGTCTTTCCACCACGAGGAATCCCTGGAAGAACTGCCCGAGACATCCGGCAAGACCACCCGGCGGTTCTTTTTCAACCTGTCCTCCATCCCCACCGAAGAGTTCATCACCTCCGCCGAGCTGCAGGTGTTCCGCGAGCAGATGCAGGACGCCCTGGGCAACAACTCCTCCTTCCACCATCGGATCAACATCTACGAGATCATCAAGCCCGCCACCGCCAACTCCAAGTTCCCCGTGACCCGGCTGCTGGACACCCGGCTGGTGAACCAGAACGCCTCCAGATGGGAGTCCTTCGACGTGACCCCTGCCGTGATGAGATGGACCGCCCAGGGCCACGCCAACCACGGCTTTGTGGTGGAAGTGGCCCACCTGGAAGAGAAGCAGGGCGTGTCCAAGCGGCACGTGCGGATCTCTCGGTCCCTGCACCAGGACGAGCACAGCTGGTCCCAGATCCGGCCCCTGCTGGTGACATTCGGCCACGATGGCAAGGGCCACCCCCTGCACAAGAGAGAGAAGCGGCAGGCCAAGCACAAGCAGCGGAAGCGGCTGAAGTCCTCCTGCAAGCGGCACCCCCTGTACGTGGACTTCTCCGACGTGGGCTGGAACGACTGGATCATTGCCCCCAAAGAGTACGAGGCCTACGAGTGCCACGGCGAGTGCCCTTTCCCCCTGGCCGACCACCTGAACTCCACCAACCACGCCATCGTGCAGACCCTGGTGAACTCCGTGAACAGCAAGATCCCCAAGGCCTGCTGCGTGCCCACCGAGCTGTCCGCCATCTCCATGCTGTACCTGGACGAGAACGAGAAGGTGGTGCTGAAGAACTACCAGGACATGGTGGTCGAAGGCTGCGGCTGTCGGTGA BMP-B9ATGGTGGCTGGCACCAGATGTCTGCTGGCCCTGCTGCTGCCCCAGGTGCTGCTGGGCGGAGCTGCTGG 109ACTGGTGCCCGAGCTGGGCAGAAGAAAGTTCGCCGCTGCCTCCTCTGGCCGGCCTTCCAGCCAGCCTTCCGACGAGGTGCTGTCCGAGTTCGAGCTGCGGCTGCTGTCCATGTTCGGCCTGAAGCAGCGGCCCACCCCTTCTAGGGACGCCGTGGTGCCCCCCTACATGCTGGACCTGTACCGGCGGCACTCCGGACAGCCTGGATCTCCTGCCCCCGACCACAGACTGGAAAGAGCCGCCTCCCGGGCCAACACCGTGCGGTCTTTCCACCACGAGGAATCCCTGGAAGAACTGCCCGAGACATCCGGCAAGACCACCCGGCGGTTCTTTTTCAACCTGTCCTCCATCCCCACCGAAGAGTTCATCACCTCCGCCGAGCTGCAGGTGTTCCGCGAGCAGATGCAGGACGCCCTGGGCAACAACTCCTCCTTCCACCATCGGATCAACATCTACGAGATCATCAAGCCCGCCACCGCCAACTCCAAGTTCCCCGTGACCCGGCTGCTGGACACCCGGCTGGTGAACCAGAACGCCTCCAGATGGGAGTCCTTCGACGTGACCCCTGCCGTGATGAGATGGACCGCCCAGGGCCACGCCAACCACGGCTTTGTGGTGGAAGTGGCCCACCTGGAAGAGAAGCAGGGCGTGTCCAAGCGGCACGTGCGGATCTCTCGGTCCCTGCACCAGGACGAGCACAGCTGGTCCCAGATCCGGCCCCTGCTGGTGACATTCGGCCACGATGGCAAGGGCCACCCCCTGCACAAGAGAGAGAAGCGGCAGGCCAAGCACAAGCAGCGGAAGCGGCTGAAGTCCTCCTGCAAGCGGCACCCCCTGTACGTGGACTTCTCCGACGTGGGCTGGAACGACTGGATCGTGGCCCCTCCCGGCTACCACGGCGAGTGCCCTTTCCCCCTGGCCGACCACCTGAACTCCACCAACCACGCCATCGTGCAGACCCTGGTGAACTCCGTGAACAGCAAGATCCCCAAGGCCTGCTGCGTGCCCACCGAGCTGTCCCCCATCTCCGTGCTGTACAAGGACGACATGGGCGTGCCCACCCTGAAGAACTACCAGGACATGGTGGTCGAAGGCTGCGGCTGTCGGTGA BMP-ATGGTGGCTGGCACCAGATGTCTGCTGGCCCTGCTGCTGCCCCAGGTGCTGCTGGGCGGAGCTGCTGG 110E9B ACTGGTGCCCGAGCTGGGCAGAAGAAAGTTCGCCGCTGCCTCCTCTGGCCGGCCTTCCAGCCAGCCTTCCGACGAGGTGCTGTCCGAGTTCGAGCTGCGGCTGCTGTCCATGTTCGGCCTGAAGCAGCGGCCCACCCCTTCTAGGGACGCCGTGGTGCCCCCCTACATGCTGGACCTGTACCGGCGGCACTCCGGACAGCCTGGATCTCCTGCCCCCGACCACAGACTGGAAAGAGCCGCCTCCCGGGCCAACACCGTGCGGTCTTTCCACCACGAGGAATCCCTGGAAGAACTGCCCGAGACATCCGGCAAGACCACCCGGCGGTTCTTTTTCAACCTGTCCTCCATCCCCACCGAAGAGTTCATCACCTCCGCCGAGCTGCAGGTGTTCCGCGAGCAGATGCAGGACGCCCTGGGCAACAACTCCTCCTTCCACCATCGGATCAACATCTACGAGATCATCAAGCCCGCCACCGCCAACTCCAAGTTCCCCGTGACCCGGCTGCTGGACACCCGGCTGGTGAACCAGAACGCCTCCAGATGGGAGTCCTTCGACGTGACCCCTGCCGTGATGAGATGGACCGCCCAGGGCCACGCCAACCACGGCTTTGTGGTGGAAGTGGCCCACCTGGAAGAGAAGCAGGGCGTGTCCAAGCGGCACGTGCGGATCTCTCGGTCCCTGCACCAGGACGAGCACAGCTGGTCCCAGATCCGGCCCCTGCTGGTGACATTCGGCCACGATGGCAAGGGCCACCCCCTGCACAAGAGAGAGAAGCGGCAGGCCAAGCACAAGCAGCGGAAGCGGCTGAAGTCCTCCTGCAAGCGGCACCCCCTGTACGTGGACTTCTCCGACGTGGGCTGGAACGACTGGATCGTGGCCCCTCCCGGCTACCACGCCTTCTACTGCGACGGCGAGTGCTCCTTCCCCCTGAACGCCCACATGAACGCCACCAACCACGCCATCGTGCAGACCCTGGTGCACCTGATGAACCCCGAGTACGTGCCCAAGCCCTGCTGCGCCCCCACCGAGCTGTCCCCCATCTCCGTGCTGTACAAGGACGACATGGGCGTGCCCACCCTGAAGAACTACCAGGACATGGTGGTCGAAGGCTGCGGCTGTCGGTGA BMP-G9ATGGTGGCTGGCACCAGATGTCTGCTGGCCCTGCTGCTGCCCCAGGTGCTGCTGGGCGGAGCTGCTGG 111ACTGGTGCCCGAGCTGGGCAGAAGAAAGTTCGCCGCTGCCTCCTCTGGCCGGCCTTCCAGCCAGCCTTCCGACGAGGTGCTGTCCGAGTTCGAGCTGCGGCTGCTGTCCATGTTCGGCCTGAAGCAGCGGCCCACCCCTTCTAGGGACGCCGTGGTGCCCCCCTACATGCTGGACCTGTACCGGCGGCACTCCGGACAGCCTGGATCTCCTGCCCCCGACCACAGACTGGAAAGAGCCGCCTCCCGGGCCAACACCGTGCGGTCTTTCCACCACGAGGAATCCCTGGAAGAACTGCCCGAGACATCCGGCAAGACCACCCGGCGGTTCTTTTTCAACCTGTCCTCCATCCCCACCGAAGAGTTCATCACCTCCGCCGAGCTGCAGGTGTTCCGCGAGCAGATGCAGGACGCCCTGGGCAACAACTCCTCCTTCCACCATCGGATCAACATCTACGAGATCATCAAGCCCGCCACCGCCAACTCCAAGTTCCCCGTGACCCGGCTGCTGGACACCCGGCTGGTGAACCAGAACGCCTCCAGATGGGAGTCCTTCGACGTGACCCCTGCCGTGATGAGATGGACCGCCCAGGGCCACGCCAACCACGGCTTTGTGGTGGAAGTGGCCCACCTGGAAGAGAAGCAGGGCGTGTCCAAGCGGCACGTGCGGATCTCTCGGTCCCTGCACCAGGACGAGCACAGCTGGTCCCAGATCCGGCCCCTGCTGGTGACATTCGGCCACGATGGCAAGGGCCACCCCCTGCACAAGAGAGAGAAGCGGCAGGCCAAGCACAAGCAGCGGAAGCGGCTGAAGTCCTCCTGCAAGCGGCACCCCCTGTACGTGGACTTCTCCGACGTGGGCTGGAACGACTGGATCATCGCCCCTAAGGAGTACGAGGCCTACGAGTGCCACGGCGAGTGCCCTTTCCCCCTGGCCGACCACCTGAACTCCACCAACCACGCCATCGTGCAGACCCTGGTGAACTCCGTGAACAGCAAGATCCCCAAGGCCTGCTGCGTGCCCACCGAGCTGTCCCCCATCTCCGTGCTGTACAAGGACGACATGGGCGTGCCCACCCTGAAGAACTACCAGGACATGGTGGTCGAAGGCTGCGGCTGTCGGTGA BMP-ATGGTGGCTGGCACCAGATGTCTGCTGGCCCTGCTGCTGCCCCAGGTGCTGCTGGGCGGAGCTGCTGG 112929 ACTGGTGCCCGAGCTGGGCAGAAGAAAGTTCGCCGCTGCCTCCTCTGGCCGGCCTTCCAGCCAGCCTTCCGACGAGGTGCTGTCCGAGTTCGAGCTGCGGCTGCTGTCCATGTTCGGCCTGAAGCAGCGGCCCACCCCTTCTAGGGACGCCGTGGTGCCCCCCTACATGCTGGACCTGTACCGGCGGCACTCCGGACAGCCTGGATCTCCTGCCCCCGACCACAGACTGGAAAGAGCCGCCTCCCGGGCCAACACCGTGCGGTCTTTCCACCACGAGGAATCCCTGGAAGAACTGCCCGAGACATCCGGCAAGACCACCCGGCGGTTCTTTTTCAACCTGTCCTCCATCCCCACCGAAGAGTTCATCACCTCCGCCGAGCTGCAGGTGTTCCGCGAGCAGATGCAGGACGCCCTGGGCAACAACTCCTCCTTCCACCATCGGATCAACATCTACGAGATCATCAAGCCCGCCACCGCCAACTCCAAGTTCCCCGTGACCCGGCTGCTGGACACCCGGCTGGTGAACCAGAACGCCTCCAGATGGGAGTCCTTCGACGTGACCCCTGCCGTGATGAGATGGACCGCCCAGGGCCACGCCAACCACGGCTTTGTGGTGGAAGTGGCCCACCTGGAAGAGAAGCAGGGCGTGTCCAAGCGGCACGTGCGGATCTCTCGGTCCCTGCACCAGGACGAGCACAGCTGGTCCCAGATCCGGCCCCTGCTGGTGACATTCGGCCACGATGGCAAGGGCCACCCCCTGCACAAGAGAGAGAAGCGGCAGGCCAAGCACAAGCAGCGGAAGCGGCTGAAGTCCTCCTGCCAGAAAACCTCCCTGCGGGTGAACTTCGAGGATATCGGCTGGGACTCCTGGATCATCGCCCCTAAGGAGTACGAGGCCTACGAGTGCCACGGCGAGTGCCCTTTCCCCCTGGCCGACCACCTGAACTCCACCAACCACGCCATCGTGCAGACCCTGGTGAACTCCGTGAACAGCAAGATCCCCAAGGCCTGCTGCGTGCCCACCAAGCTGTCCCCCATCTCCGTGCTGTACAAGGACGACATGGGCGTGCCCACCCTGAAGTACCACTACGAGGGCATGTCCGTCGCCGAGTGCGGCTGTCGGTGA BMP-ATGGTGGCTGGCACCAGATGTCTGCTGGCCCTGCTGCTGCCCCAGGTGCTGCTGGGCGGAGCTGCTGG 113969 ACTGGTGCCCGAGCTGGGCAGAAGAAAGTTCGCCGCTGCCTCCTCTGGCCGGCCTTCCAGCCAGCCTTCCGACGAGGTGCTGTCCGAGTTCGAGCTGCGGCTGCTGTCCATGTTCGGCCTGAAGCAGCGGCCCACCCCTTCTAGGGACGCCGTGGTGCCCCCCTACATGCTGGACCTGTACCGGCGGCACTCCGGACAGCCTGGATCTCCTGCCCCCGACCACAGACTGGAAAGAGCCGCCTCCCGGGCCAACACCGTGCGGTCTTTCCACCACGAGGAATCCCTGGAAGAACTGCCCGAGACATCCGGCAAGACCACCCGGCGGTTCTTTTTCAACCTGTCCTCCATCCCCACCGAAGAGTTCATCACCTCCGCCGAGCTGCAGGTGTTCCGCGAGCAGATGCAGGACGCCCTGGGCAACAACTCCTCCTTCCACCATCGGATCAACATCTACGAGATCATCAAGCCCGCCACCGCCAACTCCAAGTTCCCCGTGACCCGGCTGCTGGACACCCGGCTGGTGAACCAGAACGCCTCCAGATGGGAGTCCTTCGACGTGACCCCTGCCGTGATGAGATGGACCGCCCAGGGCCACGCCAACCACGGCTTTGTGGTGGAAGTGGCCCACCTGGAAGAGAAGCAGGGCGTGTCCAAGCGGCACGTGCGGATCTCTCGGTCCCTGCACCAGGACGAGCACAGCTGGTCCCAGATCCGGCCCCTGCTGGTGACATTCGGCCACGATGGCAAGGGCCACCCCCTGCACAAGAGAGAGAAGCGGCAGGCCAAGCACAAGCAGCGGAAGCGGCTGAAGTCCTCCTGCCAGAAAACCTCCCTGCGGGTGAACTTCGAGGATATCGGCTGGGACTCCTGGATCATCGCCCCTAAGGAGTACGAGGCCTACGAGTGCGACGGCGAGTGCTCCTTCCCCCTGAACGCCCACATGAACGCCACCAACCACGCCATCGTGCAGACCCTGGTGCACCTGATGAACCCCGAGTACGTGCCCAAGCCCTGCTGCGTCCCCACCAAGCTGTCCCCCATCTCCGTGCTGTACAAGGACGACATGGGCGTGCCCACCCTGAAGTACCACTACGAGGGCATGTCCGTCGCCGAGTGCGGCTGTCGGTGA BMP-ATGTGTCCTGGCGCTCTGTGGGTGGCCCTGCCTCTGCTGTCTCTGCTGGCCGGCAGCCTGCAGGGCAA 114QAK noGCCTCTGCAGTCCTGGGGCAGAGGCTCCGCTGGCGGCAATGCTCACAGCCCTCTGGGAGTGCCTGGCGSAGAGCGGACTGCCCGAGCACACCTTCAACCTGAAGATGTTCCTGGAAAACGTGAAGGTGGACTTCCTGCGGTCCCTGAACCTGTCCGGCGTGCCCAGCCAGGACAAGACCCGGGTGGAACCCCCCCAGTACATGATCGACCTGTACAACCGGTACACCTCCGACAAGTCCACCACCCCCGCCTCCAACATCGTGCGGTCCTTCAGCATGGAAGATGCCATCTCCATTACCGCCACCGAGGACTTCCCATTTCAGAAGCACATCCTGCTGTTCAACATCTCCATCCCCCGGCACGAGCAGATCACCAGAGCCGAGCTGCGGCTGTACGTGTCCTGCCAGAACCACGTGGACCCCTCCCACGACCTGAAGGGCTCCGTGGTGATCTACGACGTGCTGGACGGCACCGACGCCTGGGACTCCGCTACCGAGACAAAGACCTTCCTGGTGTCCCAGGATATCCAGGACGAGGGCTGGGAGACACTGGAAGTGTCCTCCGCCGTGAAGAGATGGGTGCGATCCGACTCCACCAAGTCCAAGAACAAGCTGGAAGTGACCGTGGAATCCCACCGGAAGGGCTGCGACACCCTGGACATCTCCGTGCCCCCTGGCTCCCGGAACCTGCCCTTCTTCGTGGTGTTCTCCAACGACCACTCCTCCGGCACCAAAGAGACACGGCTGGAACTGAGAGAGATGATCTCCCACGAGCAGGAATCCGTCCTGAAGAAGCTGTCCAAGGACGGCTCCACCGAGGCCGGCGAGTCCTCTCACGAAGAGGACACCGACGGCCACGTGGCAGCTGGCTCTACCCTGGCCAGACGGAAGCGGCAGGCCAAGCACAAGCAGCGGAAGCGGCTGAAGTCCAGCTGCCAGAAAACCTCCCTGAGAGTGAACTTCGAGGACATCGGCTGGGACAGCTGGATCATTGCCCCCAAAGAGTACGAGGCCTACGAGTGCAAGGGCGGCTGCTTCTTCCCCCTGGCCGACGACGTGACCCCCACCAAGCACGCCATCGTGCAGACCCTGGTGCACCTGAAGTTCCCCACCAAAGTGGGCAAGGCCTGCTGCGTGCCCACCAAGCTGTCCCCCATCAGCGTGCTGTACAAGGACGACATGGGCGTGCCAACCCTGAAGTACCACTACGAGGGCATGTCCGTGGCCGAGTGTGGCTGCCGGTGA BMP-ATGTGTCCTGGCGCTCTGTGGGTGGCCCTGCCTCTGCTGTCTCTGCTGGCCGGCAGCCTGCAGGGCAA 115QAKSAGCCTCTGCAGTCCTGGGGCAGAGGCTCCGCTGGCGGCAATGCTCACAGCCCTCTGGGAGTGCCTGGCG GACGCGGACTGCCCGAGCACACCTTCAACCTGAAGATGTTCCTGGAAAACGTGAAGGTGGACTTCCTGCGGTCCCTGAACCTGTCCGGCGTGCCCAGCCAGGACAAGACCCGGGTGGAACCCCCCCAGTACATGATCGACCTGTACAACCGGTACACCTCCGACAAGTCCACCACCCCCGCCTCCAACATCGTGCGGTCCTTCAGCATGGAAGATGCCATCTCCATTACCGCCACCGAGGACTTCCCATTTCAGAAGCACATCCTGCTGTTCAACATCTCCATCCCCCGGCACGAGCAGATCACCAGAGCCGAGCTGCGGCTGTACGTGTCCTGCCAGAACCACGTGGACCCCTCCCACGACCTGAAGGGCTCCGTGGTGATCTACGACGTGCTGGACGGCACCGACGCCTGGGACTCCGCTACCGAGACAAAGACCTTCCTGGTGTCCCAGGATATCCAGGACGAGGGCTGGGAGACACTGGAAGTGTCCTCCGCCGTGAAGAGATGGGTGCGATCCGACTCCACCAAGTCCAAGAACAAGCTGGAAGTGACCGTGGAATCCCACCGGAAGGGCTGCGACACCCTGGACATCTCCGTGCCCCCTGGCTCCCGGAACCTGCCCTTCTTCGTGGTGTTCTCCAACGACCACTCCTCCGGCACCAAAGAGACACGGCTGGAACTGAGAGAGATGATCTCCCACGAGCAGGAATCCGTCCTGAAGAAGCTGTCCAAGGACGGCTCCACCGAGGCCGGCGAGTCCTCTCACGAAGAGGACACCGACGGCCACGTGGCAGCTGGCTCTACCCTGGCCAGACGGAAGCGGCAGGCCAAGCACAAGCAGCGGAAGCGGCTGAAGTCCAGCTCCGCTGGCGCAGGCTCCCACTGCCAGAAAACCTCCCTGAGAGTGAACTTCGAGGACATCGGCTGGGACAGCTGGATCATTGCCCCCAAAGAGTACGAGGCCTACGAGTGCAAGGGCGGCTGCTTCTTCCCCCTGGCCGACGACGTGACCCCCACCAAGCACGCCATCGTGCAGACCCTGGTGCACCTGAAGTTCCCCACCAAAGTGGGCAAGGCCTGCTGCGTGCCCACCAAGCTGTCCCCCATCAGCGTGCTGTACAAGGACGACATGGGCGTGCCAACCCTGAAGTACCACTACGAGGGCATGTCCGTGGCCGAGTGTGGCTGCCGGTGA BMP-ATGTGTCCTGGCGCTCTGTGGGTGGCCCTGCCTCTGCTGTCTCTGCTGGCCGGCAGCCTGCAGGGCAA 116GEP GCCTCTGCAGTCCTGGGGCAGAGGCTCCGCTGGCGGCAATGCTCACAGCCCTCTGGGAGTGCCTGGCGGCGGACTGCCCGAGCACACCTTCAACCTGAAGATGTTCCTGGAAAACGTGAAGGTGGACTTCCTGCGGTCCCTGAACCTGTCCGGCGTGCCCAGCCAGGACAAGACCCGGGTGGAACCCCCCCAGTACATGATCGACCTGTACAACCGGTACACCTCCGACAAGTCCACCACCCCCGCCTCCAACATCGTGCGGTCCTTCAGCATGGAAGATGCCATCTCCATTACCGCCACCGAGGACTTCCCATTTCAGAAGCACATCCTGCTGTTCAACATCTCCATCCCCCGGCACGAGCAGATCACCAGAGCCGAGCTGCGGCTGTACGTGTCCTGCCAGAACCACGTGGACCCCTCCCACGACCTGAAGGGCTCCGTGGTGATCTACGACGTGCTGGACGGCACCGACGCCTGGGACTCCGCTACCGAGACAAAGACCTTCCTGGTGTCCCAGGATATCCAGGACGAGGGCTGGGAGACACTGGAAGTGTCCTCCGCCGTGAAGAGATGGGTGCGATCCGACTCCACCAAGTCCAAGAACAAGCTGGAAGTGACCGTGGAATCCCACCGGAAGGGCTGCGACACCCTGGACATCTCCGTGCCCCCTGGCTCCCGGAACCTGCCCTTCTTCGTGGTGTTCTCCAACGACCACTCCTCCGGCACCAAAGAGACACGGCTGGAACTGAGAGAGATGATCTCCCACGAGCAGGAATCCGTCCTGAAGAAGCTGTCCAAGGACGGCTCCACCGAGGCCGGCGAGTCCTCTCACGAAGAGGACACCGACGGCCACGTGGCAGCTGGCTCTACCCTGGCCAGACGGAAGCGGCAGGCCAAGCACAAGCAGCGGAAGCGGCTGAAGTCCAGCTCCGCTGGCGCAGGCTCCCACTGCCAGAAAACCTCCCTGAGAGTGAACTTCGAGGACATCGGCTGGGACAGCTGGATCATTGCCCCCAAAGAGTACGAGGCCTACGAGTGCAAGGGCGGCTGCTTCTTCCCCCTGGCCGACGACGTGACCCCCACCAAGCACGCCATCGTGCAGACCCTGGTGCACCTGAAGTTCCCCACCAAAGTGGGCAAGGCCTGCTGCGTGCCCACCAAGCTGTCCCCCATCAGCGTGCTGTACAAGGACGACATGGGCGTGCCAACCCTGAAGTACCACTACGAGGGCATGTCCGTGGCCGAGTGTGGCTGCCGGTGA BMP6-ATGCCGGGGCTGGGGCGGAGGGCGCAGTGGCTGTGCTGGTGGTGGGGGCTGCTGTGCAGCTGCTGCGG 117SA GCCCCCGCCGCTGCGGCCGCCCTTGCCCGCTGCCGCGGCCGCCGCCGCCGGGGGGCAGCTGCTGGGGGACGGCGGGAGCCCCGGCCGCACGGAGCAGCCGCCGCCGTCGCCGCAGTCCTCCTCGGGCTTCCTGTACCGGCGGCTCAAGACGCAGGAGAAGCGGGAGATGCAGAAGGAGATCTTGTCGGTGCTGGGGCTCCCGCACCGGCCCCGGCCCCTGCACGGCCTCCAACAGCCGCAGCCCCCGGCGCTCCGGCAGCAGGAGGAGCAGCAGCAGCAGCAGCAGCTGCCTCGCGGAGAGCCCCCTCCCGGGCGACTGAAGTCCGCGCCCCTCTTCATGCTGGATCTGTACAACGCCCTGTCCGCCGACAACGACGAGGACGGGGCGTCGGAGGGGGAGAGGCAGCAGTCCTGGCCCCACGAAGCAGCCAGCTCGTCCCAGCGTCGGCAGCCGCCCCCGGGCGCCGCGCACCCGCTCAACCGCAAGAGCCTTCTGGCCCCCGGATCTGGCAGCGGCGGCGCGTCCCCACTGACCAGCGCGCAGGACAGCGCCTTCCTCAACGACGCGGACATGGTCATGAGCTTTGTGAACCTGGTGGAGTACGACAAGGAGTTCTCCCCTCGTCAGCGACACCACAAAGAGTTCAAGTTCAACTTATCCCAGATTCCTGAGGGTGAGGTGGTGACGGCTGCAGAATTCCGCATCTACAAGGACTGTGTTATGGGGAGTTTTAAAAACCAAACTTTTCTTATCAGCATTTATCAAGTCTTACAGGAGCATCAGCACAGAGACTCTGACCTGTTTTTGTTGGACACCCGTGTAGTATGGGCCTCAGAAGAAGGCTGGCTGGAATTTGACATCACGGCCACTAGCAATCTGTGGGTTGTGACTCCACAGCATAACATGGGGCTTCAGCTGAGCGTGGTGACAAGGGATGGAGTCCACGTCCACCCCCGAGCCGCAGGCCTGGTGGGCAGAGACGGCCCTTACGACAAGCAGCCCTTCATGGTGGCTTTCTTCAAAGTGAGTGAGGTGCACGTGCGCACCACCAGGTCAGCCTCCAGCCGGCGCCGACAACAGAGTCGTAATCGCTCTACCCAGTCCCAGGACGTGGCGCGGGTCTCCAGTGCTTCAGATTACAACAGCAGTGAATTGAAAACAGCCTGCAGGAAGCATGAGCTGTATGTGAGTTTCCAAGACCTGGGATGGCAGGACTGGATCATTGCACCCAAGGGCTATGCTGCCAATTACTGTGATGGAGAATGCTCCTTCCCACTCAACGCAGCCATGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCAACTAAGCTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTCTGAAAAAATACAGGAATATGGTTGTAAGAGCTTGTGGATGCCACTAA BMP6-ATGCCGGGGCTGGGGCGGAGGGCGCAGTGGCTGTGCTGGTGGTGGGGGCTGCTGTGCAGCTGCTGCGG 118SL GCCCCCGCCGCTGCGGCCGCCCTTGCCCGCTGCCGCGGCCGCCGCCGCCGGGGGGCAGCTGCTGGGGGACGGCGGGAGCCCCGGCCGCACGGAGCAGCCGCCGCCGTCGCCGCAGTCCTCCTCGGGCTTCCTGTACCGGCGGCTCAAGACGCAGGAGAAGCGGGAGATGCAGAAGGAGATCTTGTCGGTGCTGGGGCTCCCGCACCGGCCCCGGCCCCTGCACGGCCTCCAACAGCCGCAGCCCCCGGCGCTCCGGCAGCAGGAGGAGCAGCAGCAGCAGCAGCAGCTGCCTCGCGGAGAGCCCCCTCCCGGGCGACTGAAGTCCGCGCCCCTCTTCATGCTGGATCTGTACAACGCCCTGTCCGCCGACAACGACGAGGACGGGGCGTCGGAGGGGGAGAGGCAGCAGTCCTGGCCCCACGAAGCAGCCAGCTCGTCCCAGCGTCGGCAGCCGCCCCCGGGCGCCGCGCACCCGCTCAACCGCAAGAGCCTTCTGGCCCCCGGATCTGGCAGCGGCGGCGCGTCCCCACTGACCAGCGCGCAGGACAGCGCCTTCCTCAACGACGCGGACATGGTCATGAGCTTTGTGAACCTGGTGGAGTACGACAAGGAGTTCTCCCCTCGTCAGCGACACCACAAAGAGTTCAAGTTCAACTTATCCCAGATTCCTGAGGGTGAGGTGGTGACGGCTGCAGAATTCCGCATCTACAAGGACTGTGTTATGGGGAGTTTTAAAAACCAAACTTTTCTTATCAGCATTTATCAAGTCTTACAGGAGCATCAGCACAGAGACTCTGACCTGTTTTTGTTGGACACCCGTGTAGTATGGGCCTCAGAAGAAGGCTGGCTGGAATTTGACATCACGGCCACTAGCAATCTGTGGGTTGTGACTCCACAGCATAACATGGGGCTTCAGCTGAGCGTGGTGACAAGGGATGGAGTCCACGTCCACCCCCGAGCCGCAGGCCTGGTGGGCAGAGACGGCCCTTACGACAAGCAGCCCTTCATGGTGGCTTTCTTCAAAGTGAGTGAGGTGCACGTGCGCACCACCAGGTCAGCCTCCAGCCGGCGCCGACAACAGAGTCGTAATCGCTCTACCCAGTCCCAGGACGTGGCGCGGGTCTCCAGTGCTTCAGATTACAACAGCAGTGAATTGAAAACAGCCTGCAGGAAGCATGAGCTGTATGTGAGTTTCCAAGACCTGGGATGGCAGGACTGGATCATTGCACCCAAGGGCTATGCTGCCAATTACTGTGATGGAGAATGCTCCTTCCCACTCAACGCACACCTGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCAACTAAGCTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTCTGAAAAAATACAGGAATATGGTTGTAAGAGCTTGTGGATGCCACTAA BMP6-AATGCCGGGGCTGGGGCGGAGGGCGCAGTGGCTGTGCTGGTGGTGGGGGCTGCTGTGCAGCTGCTGCGG 119GCCCCCGCCGCTGCGGCCGCCCTTGCCCGCTGCCGCGGCCGCCGCCGCCGGGGGGCAGCTGCTGGGGGACGGCGGGAGCCCCGGCCGCACGGAGCAGCCGCCGCCGTCRCCGCAGTCCTCCTCGGGCTTCCTGTACCGGCGGCTCAAGACGCAGGAGAAGCGGGAGATGCAGAAGGAGATCTTGTCGGTGCTGGGGCTCCCGCACCGGCCCCGGCCCCTGCACGGCCTCCAACAGCCGCAGCCCCCGGCGCTCCGGCAGCAGGAGGAGCAGCAGCAGCAGCAGCAGCTGCCTCGCGGAGAGCCCCCTCCCGGGCGACTGAAGTCCGCGCCCCTCTTCATGCTGGATCTGTACAACGCCCTGTCCGCCGACAACGACGAGGACGGGGCGTCGGAGGGGGAGAGGCAGCAGTCCTGGCCCCACGAAGCAGCCAGCTCGTCCCAGCGTCGGCAGCCGCCCCCGGGCGCCGCGCACCCGCTCAACCGCAAGAGCCTTCTGGCCCCCGGATCTGGCAGCGGCGGCGCGTCCCCACTGACCAGCGCGCAGGACAGCGCCTTCCTCAACGACGCGGACATGGTCATGAGCTTTGTGAACCTGGTGGAGTACGACAAGGAGTTCTCCCCTCGTCAGCGACACCACAAAGAGTTCAAGTTCAACTTATCCCAGATTCCTGAGGGTGAGGTGGTGACGGCTGCAGAATTCCGCATCTACAAGGACTGTGTTATGGGGAGTTTTAAAAACCAAACTTTTCTTATCAGCATTTATCAAGTCTTACAGGAGCATCAGCACAGAGACTCTGACCTGTTTTTGTTGGACACCCGTGTAGTATGGGCCTCAGAAGAAGGCTGGCTGGAATTTGACATCACGGCCACTAGCAATCTGTGGGTTGTGACTCCACAGCATAACATGGGGCTTCAGCTGAGCGTGGTGACAAGGGATGGAGTCCACGTCCACCCCCGAGCCGCAGGCCTGGTGGGCAGAGACGGCCCTTACGATAAGCAGCCCTTCATGGTGGCTTTCTTCAAAGTGAGTGAGGTCCACGTGCGCACCACCAGGTCAGCCTCCAGCCGGCGCCGACAACAGAGTCGTAATCGCTCTACCCAGTCCCAGGACGTGGCGCGGGTCTCCAGTGCTTCAGATTACAACAGCAGTGAATTGAAAACAGCCTGCAGGAAGCATGAGCTGTATGTGAGTTTCCAAGACCTGGGATGGCAGGACTGGATCATTGCACCCAAGGGCTATGCTGCCAATTACTGTGATGGAGAATGCTCCTTCCCTCTGGCTGATCATCTGAACTCCACTAATCATGCCATTGTGCAGACCTTGGTTAACTCTGTTAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCAACTAAGCTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTCTGAAAAAATACAGGAATATGGTTGTAAGAGCTTGTGGATGCCACTAA BMP6-BATGCCGGGGCTGGGGCGGAGGGCGCAGTGGCTGTGCTGGTGGTGGGGGCTGCTGTGCAGCTGCTGCGG 120GCCCCCGCCGCTGCGGCCGCCCTTGCCCGCTGCCGCGGCCGCCGCCGCCGGGGGGCAGCTGCTGGGGGACGGCGGGAGCCCCGGCCGCACGGAGCAGCCGCCGCCGTCGCCGCAGTCCTCCTCGGGCTTCCTGTACCGGCGGCTCAAGACGCAGGAGAAGCGGGAGATGCAGAAGGAGATCTTGTCGGTGCTGGGGCTCCCGCACCGGCCCCGGCCCCTGCACGGCCTCCAACAGCCGCAGCCCCCGGCGCTCCGGCAGCAGGAGGAGCAGCAGCAGCAGCAGCAGCTGCCTCGCGGAGAGCCCCCTCCCGGGCGACTGAAGTCCGCGCCCCTCTTCATGCTGGATCTGTACAACGCCCTGTCCGCCGACAACGACGAGGACGGGGCGTCGGAGGGGGAGAGGCAGCAGTCCTGGCCCCACGAAGCAGCCAGCTCGTCCCAGCGTCGGCAGCCGCCCCCGGGCGCCGCGCACCCGCTCAACCGCAAGAGCCTTCTGGCCCCCGGATCTGGCAGCGGCGGCGCGTCCCCACTGACCAGCGCGCAGGACAGCGCCTTCCTCAACGACGCGGACATGGTCATGAGCTTTGTGAACCTGGTGGAGTACGACAAGGAGTTCTCCCCTCGTCAGCGACACCACAAAGAGTTCAAGTTCAACTTATCCCAGATTCCTGAGGGTGAGGTGGTGACGGCTGCAGAATTCCGCATCTACAAGGACTGTGTTATGGGGAGTTTTAAAAACCAAACTTTTCTTATCAGCATTTATCAAGTCTTACAGGAGCATCAGCACAGAGACTCTGACCTGTTTTTGTTGGACACCCGTGTAGTATGGGCCTCAGAAGAAGGCTGGCTGGAATTTGACATCACGGCCACTAGCAATCTGTGGGTTGTGACTCCACAGCATAACATGGGGCTTCAGCTGAGCGTGGTGACAAGGGATGGAGTCCACGTCCACCCCCGAGCCGCAGGCCTGGTGGGCAGAGACGGCCCTTACGATAAGCAGCCCTTCATGGTGGCTTTCTTCAAAGTGAGTGAGGTCCACGTGCGCACCACCAGGTCAGCCTCCAGCCGGCGCCGACAACAGAGTCGTAATCGCTCTACCCAGTCCCAGGACGTGGCGCGGGTCTCCAGTGCTTCAGATTACAACAGCAGTGAATTGAAAACAGCCTGCAGGAAGCATGAGCTGTATGTGAGTTTCCAAGACCTGGGATGGCAGGACTGGATCATTGCACCCAAGGGCTATGCTGCCAATTACTGTCACGGAGAATGCCCTTTTCCTCTGGCTGATCATCTGAACTCCACTAATCATGCCATTGTGCAGACCTTGGTTAACTCTGTTAACTCTAAGATTCCTAAGGCATGCTGTGTCCCAACTAAGCTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTCTGAAAAAATACAGGAATATGGTTGTAAGAGCTTGTGGATGCCACTAA BMP6-CATGCCGGGGCTGGGGCGGAGGGCGCAGTGGCTGTGCTGGTGGTGGGGGCTGCTGTGCAGCTGCTGCGG 121GCCCCCGCCGCTGCGGCCGCCCTTGCCCGCTGCCGCGGCCGCCGCCGCCGGGGGGCAGCTGCTGGGGGACGGCGGGAGCCCCGGCCGCACGGAGCAGCCGCCGCCGTCGCCGCAGTCCTCCTCGGGCTTCCTGTACCGGCGGCTCAAGACGCAGGAGAAGCGGGAGATGCAGAAGGAGATCTTGTCGGTGCTGGGGCTCCCGCACCGGCCCCGGCCCCTGCACGGCCTCCAACAGCCGCAGCCCCCGGCGCTCCGGCAGCAGGAGGAGCAGCAGCAGCAGCAGCAGCTGCCTCGCGGAGAGCCCCCTCCCGGGCGACTGAAGTCCGCGCCCCTCTTCATGCTGGATCTGTACAACGCCCTGTCCGCCGACAACGACGAGGACGGGGCGTCGGAGGGGGAGAGGCAGCAGTCCTGGCCCCACGAAGCAGCCAGCTCGTCCCAGCGTCGGCAGCCGCCCCCGGGCGCCGCGCACCCGCTCAACCGCAAGAGCCTTCTGGCCCCCGGATCTGGCAGCGGCGGCGCGTCCCCACTGACCAGCGCGCAGGACAGCGCCTTCCTCAACGACGCGGACATGGTCATGAGCTTTGTGAACCTGGTGGAGTACGACAAGGAGTTCTCCCCTCGTCAGCGACACCACAAAGAGTTCAAGTTCAACTTATCCCAGATTCCTGAGGGTGAGGTGGTGACGGCTGCAGAATTCCGCATCTACAAGGACTGTGTTATGGGGAGTTTTAAAAACCAAACTTTTCTTATCAGCATTTATCAAGTCTTACAGGAGCATCAGCACAGAGACTCTGACCTGTTTTTGTTGGACACCCGTGTAGTATGGGCCTCAGAAGAAGGCTGGCTGGAATTTGACATCACGGCCACTAGCAATCTGTGGGTTGTGACTCCACAGCATAACATGGGGCTTCAGCTGAGCGTGGTGACAAGGGATGGAGTCCACGTCCACCCCCGAGCCGCAGGCCTGGTGGGCAGAGACGGCCCTTACGACAAGCAGCCCTTCATGGTGGCTTTCTTCAAAGTGAGTGAGGTGCACGTGCGCACCACCAGGTCAGCCTCCAGCCGGCGCCGACAACAGAGTCGTAATCGCTCTACCCAGTCCCAGGACGTGGCGCGGGTCTCCAGTGCTTCAGATTACAACAGCAGTGAATTGAAAACAGCCTGCAGGAAGCATGAGCTGTATGTGAGTTTCCAAGACCTGGGATGGCAGGACTGGATCGTGGCTCCTCCGGGGTATCACGCCTTTTACTGTGATGGAGAATGCTCCTTCCCACTCAACGCACACATGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCAACTAAGCTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTCTGAAAAAATACAGGAATATGGTTGTAAGAGCTTGTGGATGCCACTAA BMP6-DATGCCGGGGCTGGGGCGGAGGGCGCAGTGGCTGTGCTGGTGGTGGGGGCTGCTGTGCAGCTGCTGCGG 122GCCCCCGCCGCTGCGGCCGCCCTTGCCCGCTGCCGCGGCCGCCGCCGCCGGGGGGCAGCTGCTGGGGGACGGCGGGAGCCCCGGCCGCACGGAGCAGCCGCCGCCGTCGCCGCAGTCCTCCTCGGGCTTCCTGTACCGGCGGCTCAAGACGCAGGAGAAGCGGGAGATGCAGAAGGAGATCTTGTCGGTGCTGGGGCTCCCGCACCGGCCCCGGCCCCTGCACGGCCTCCAACAGCCGCAGCCCCCGGCGCTCCGGCAGCAGGAGGAGCAGCAGCAGCAGCAGCAGCTGCCTCGCGGAGAGCCCCCTCCCGGGCGACTGAAGTCCGCGCCCCTCTTCATGCTGGATCTGTACAACGCCCTGTCCGCCGACAACGACGAGGACGGGGCGTCGGAGGGGGAGAGGCAGCAGTCCTGGCCCCACGAAGCAGCCAGCTCGTCCCAGCGTCGGCAGCCGCCCCCGGGCGCCGCGCACCCGCTCAACCGCAAGAGCCTTCTGGCCCCCGGATCTGGCAGCGGCGGCGCGTCCCCACTGACCAGCGCGCAGGACAGCGCCTTCCTCAACGACGCGGACATGGTCATGAGCTTTGTGAACCTGGTGGAGTACGACAAGGAGTTCTCCCCTCGTCAGCGACACCACAAAGAGTTCAAGTTCAACTTATCCCAGATTCCTGAGGGTGAGGTGGTGACGGCTGCAGAATTCCGCATCTACAAGGACTGTGTTATGGGGAGTTTTAAAAACCAAACTTTTCTTATCAGCATTTATCAAGTCTTACAGGAGCATCAGCACAGAGACTCTGACCTGTTTTTGTTGGACACCCGTGTAGTATGGGCCTCAGAAGAAGGCTGGCTGGAATTTGACATCACGGCCACTAGCAATCTGTGGGTTGTGACTCCACAGCATAACATGGGGCTTCAGCTGAGCGTGGTGACAAGGGATGGAGTCCACGTCCACCCCCGAGCCGCAGGCCTGGTGGGCAGAGACGGCCCTTACGACAAGCAGCCCTTCATGGTGGCTTTCTTCAAAGTGAGTGAGGTGCACGTGCGCACCACCAGGTCAGCCTCCAGCCGGCGCCGACAACAGAGTCGTAATCGCTCTACCCAGTCCCAGGACGTGGCGCGGGTCTCCAGTGCTTCAGATTACAACAGCAGTGAATTGAAAACAGCCTGCAGGAAGCATGAGCTGTATGTGAGTTTCCAAGACCTGGGATGGCAGGACTGGATCGTGGCTCCTCCGGGGTATCACGCCTTTTACTGTGATGGAGAATGCTCCTTCCCACTCAACGCACACATGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCAACTGAACTCAGTGCTATCTCGATGCTGTACCTTGACGAGAATGAAAAGGTTGTACTGAAAAAATACAGGAATATGGTTGTAAGAGCTTGTGGATGCCACTAA BMP6-ATGCCGGGGCTGGGGCGGAGGGCGCAGTGGCTGTGCTGGTGGTGGGGGCTGCTGTGCAGCTGCTGCGG 123AD HLGCCCCCGCCGCTGCGGCCGCCCTTGCCCGCTGCCGCGGCCGCCGCCGCCGGGGGGCAGCTGCTGGGGGACGGCGGGAGCCCCGGCCGCACGGAGCAGCCGCCGCCGTCGCCGCAGTCCTCCTCGGGCTTCCTGTACCGGCGGCTCAAGACGCAGGAGAAGCGGGAGATGCAGAAGGAGATCTTGTCGGTGCTGGGGCTCCCGCACCGGCCCCGGCCCCTGCACGGCCTCCAACAGCCGCAGCCCCCGGCGCTCCGGCAGCAGGAGGAGCAGCAGCAGCAGCAGCAGCTGCCTCGCGGAGAGCCCCCTCCCGGGCGACTGAAGTCCGCGCCCCTCTTCATGCTGGATCTGTACAACGCCCTGTCCGCCGACAACGACGAGGACGGGGCGTCGGAGGGGGAGAGGCAGCAGTCCTGGCCCCACGAAGCAGCCAGCTCGTCCCAGCGTCGGCAGCCGCCCCCGGGCGCCGCGCACCCGCTCAACCGCAAGAGCCTTCTGGCCCCCGGATCTGGCAGCGGCGGCGCGTCCCCACTGACCAGCGCGCAGGACAGCGCCTTCCTCAACGACGCGGACATGGTCATGAGCTTTGTGAACCTGGTGGAGTACGACAAGGAGTTCTCCCCTCGTCAGCGACACCACAAAGAGTTCAAGTTCAACTTATCCCAGATTCCTGAGGGTGAGGTGGTGACGGCTGCAGAATTCCGCATCTACAAGGACTGTGTTATGGGGAGTTTTAAAAACCAAACTTTTCTTATCAGCATTTATCAAGTCTTACAGGAGCATCAGCACAGAGACTCTGACCTGTTTTTGTTGGACACCCGTGTAGTATGGGCCTCAGAAGAAGGCTGGCTGGAATTTGACATCACGGCCACTAGCAATCTGTGGGTTGTGACTCCACAGCATAACATGGGGCTTCAGCTGAGCGTGGTGACAAGGGATGGAGTCCACGTCCACCCCCGAGCCGCAGGCCTGGTGGGCAGAGACGGCCCTTACGACAAGCAGCCCTTCATGGTGGCTTTCTTCAAAGTGAGTGAGGTGCACGTGCGCACCACCAGGTCAGCCTCCAGCCGGCGCCGACAACAGAGTCGTAATCGCTCTACCCAGTCCCAGGACGTGGCGCGGGTCTCCAGTGCTTCAGATTACAACAGCAGTGAATTGAAAACAGCCTGCAGGAAGCATGAGCTGTATGTGAGTTTCCAAGACCTGGGATGGCAGGACTGGATCATTGCACCCAAGGGCTATGCTGCCAATTACTGTGATGGAGAATGCTCCTTCCCACTCGCCGATCACCTGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCAACTAAGCTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTCTGAAAAAATACAGGAATATGGTTGTAAGAGCTTGTGGATGCCACTAA BMP6-ATGCCGGGGCTGGGGCGGAGGGCGCAGTGGCTGTGCTGGTGGTGGGGGCTGCTGTGCAGCTGCTGCGG 124RK-KRGCCCCCGCCGCTGCGGCCGCCCTTGCCCGCTGCCGCGGCCGCCGCCGCCGGGGGGCAGCTGCTGGGGGACGGCGGGAGCCCCGGCCGCACGGAGCAGCCGCCGCCGTCGCCGCAGTCCTCCTCGGGCTTCCTGTACCGGCGGCTCAAGACGCAGGAGAAGCGGGAGATGCAGAAGGAGATCTTGTCGGTGCTGGGGCTCCCGCACCGGCCCCGGCCCCTGCACGGCCTCCAACAGCCGCAGCCCCCGGCGCTCCGGCAGCAGGAGGAGCAGCAGCAGCAGCAGCAGCTGCCTCGCGGAGAGCCCCCTCCCGGGCGACTGAAGTCCGCGCCCCTCTTCATGCTGGATCTGTACAACGCCCTGTCCGCCGACAACGACGAGGACGGGGCGTCGGAGGGGGAGAGGCAGCAGTCCTGGCCCCACGAAGCAGCCAGCTCGTCCCAGCGTCGGCAGCCGCCCCCGGGCGCCGCGCACCCGCTCAACCGCAAGAGCCTTCTGGCCCCCGGATCTGGCAGCGGCGGCGCGTCCCCACTGACCAGCGCGCAGGACAGCGCCTTCCTCAACGACGCGGACATGGTCATGAGCTTTGTGAACCTGGTGGAGTACGACAAGGAGTTCTCCCCTCGTCAGCGACACCACAAAGAGTTCAAGTTCAACTTATCCCAGATTCCTGAGGGTGAGGTGGTGACGGCTGCAGAATTCCGCATCTACAAGGACTGTGTTATGGGGAGTTTTAAAAACCAAACTTTTCTTATCAGCATTTATCAAGTCTTACAGGAGCATCAGCACAGAGACTCTGACCTGTTTTTGTTGGACACCCGTGTAGTATGGGCCTCAGAAGAAGGCTGGCTGGAATTTGACATCACGGCCACTAGCAATCTGTGGGTTGTGACTCCACAGCATAACATGGGGCTTCAGCTGAGCGTGGTGACAAGGGATGGAGTCCACGTCCACCCCCGAGCCGCAGGCCTGGTGGGCAGAGACGGCCCTTACGACAAGCAGCCCTTCATGGTGGCTTTCTTCAAAGTGAGTGAGGTGCACGTGCGCACCACCAGGTCAGCCTCCAGCCGGCGCCGACAACAGAGTCGTAATCGCTCTACCCAGTCCCAGGACGTGGCGCGGGTCTCCAGTGCTTCAGATTACAACAGCAGTGAATTGAAAACAGCCTGCAAGAGGCATGAGCTGTATGTGAGTTTCCAAGACCTGGGATGGCAGGACTGGATCATTGCACCCAAGGGCTATGCTGCCAATTACTGTGATGGAGAATGCTCCTTCCCACTCAACGCACACATGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCAACTAAGCTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTCTGAAAAAATACAGGAATATGGTTGTAAGAGCTTGTGGATGCCACTAA BMP6-ATGCCGGGGCTGGGGCGGAGGGCGCAGTGGCTGTGCTGGTGGTGGGGGCTGCTGTGCAGCTGCTGCGG 125RK-KRGCCCCCGCCGCTGCGGCCGCCCTTGCCCGCTGCCGCGGCCGCCGCCGCCGGGGGGCAGCTGCTGGGGGADHLACGGCGGGAGCCCCGGCCGCACGGAGCAGCCGCCGCCGTCGCCGCAGTCCTCCTCGGGCTTCCTGTAClongCGGCGGCTCAAGACGCAGGAGAAGCGGGAGATGCAGAAGGAGATCTTGTCGGTGCTGGGGCTCCCGCACCGGCCCCGGCCCCTGCACGGCCTCCAACAGCCGCAGCCCCCGGCGCTCCGGCAGCAGGAGGAGCAGCAGCAGCAGCAGCAGCTGCCTCGCGGAGAGCCCCCTCCCGGGCGACTGAAGTCCGCGCCCCTCTTCATGCTGGATCTGTACAACGCCCTGTCCGCCGACAACGACGAGGACGGGGCGTCGGAGGGGGAGAGGCAGCAGTCCTGGCCCCACGAAGCAGCCAGCTCGTCCCAGCGTCGGCAGCCGCCCCCGGGCGCCGCGCACCCGCTCAACCGCAAGAGCCTTCTGGCCCCCGGATCTGGCAGCGGCGGCGCGTCCCCACTGACCAGCGCGCAGGACAGCGCCTTCCTCAACGACGCGGACATGGTCATGAGCTTTGTGAACCTGGTGGAGTACGACAAGGAGTTCTCCCCTCGTCAGCGACACCACAAAGAGTTCAAGTTCAACTTATCCCAGATTCCTGAGGGTGAGGTGGTGACGGCTGCAGAATTCCGCATCTACAAGGACTGTGTTATGGGGAGTTTTAAAAACCAAACTTTTCTTATCAGCATTTATCAAGTCTTACAGGAGCATCAGCACAGAGACTCTGACCTGTTTTTGTTGGACACCCGTGTAGTATGGGCCTCAGAAGAAGGCTGGCTGGAATTTGACATCACGGCCACTAGCAATCTGTGGGTTGTGACTCCACAGCATAACATGGGGCTTCAGCTGAGCGTGGTGACAAGGGATGGAGTCCACGTCCACCCCCGAGCCGCAGGCCTGGTGGGCAGAGACGGCCCTTACGACAAGCAGCCCTTCATGGTGGCTTTCTTCAAAGTGAGTGAGGTGCACGTGCGCACCACCAGGTCAGCCTCCAGCCGGCGCCGACAACAGAGTCGTAATCGCTCTACCCAGTCCCAGGACGTGGCGCGGGTCTCCAGTGCTTCAGATTACAACAGCAGTGAATTGAAAACAGCCTGCAAGAGGCATGAGCTGTATGTGAGTTTCCAAGACCTGGGATGGCAGGACTGGATCATTGCACCCAAGGGCTATGCTGCCAATTACTGTGATGGAGAATGCTCCTTCCCACTCGCCGATCACCTGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCAACTAAGCTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTCTGAAAAAATACAGGAATATGGTTGTAAGAGCTTGTGGATGCCACTAA BMP6-AATGCCGGGGCTGGGGCGGAGGGCGCAGTGGCTGTGCTGGTGGTGGGGGCTGCTGTGCAGCTGCTGCGG 126RK-KRGCCCCCGCCGCTGCGGCCGCCCTTGCCCGCTGCCGCGGCCGCCGCCGCCGGGGGGCAGCTGCTGGGGGACGGCGGGAGCCCCGGCCGCACGGAGCAGCCGCCGCCGTCRCCGCAGTCCTCCTCGGGCTTCCTGTACCGGCGGCTCAAGACGCAGGAGAAGCGGGAGATGCAGAAGGAGATCTTGTCGGTGCTGGGGCTCCCGCACCGGCCCCGGCCCCTGCACGGCCTCCAACAGCCGCAGCCCCCGGCGCTCCGGCAGCAGGAGGAGCAGCAGCAGCAGCAGCAGCTGCCTCGCGGAGAGCCCCCTCCCGGGCGACTGAAGTCCGCGCCCCTCTTCATGCTGGATCTGTACAACGCCCTGTCCGCCGACAACGACGAGGACGGGGCGTCGGAGGGGGAGAGGCAGCAGTCCTGGCCCCACGAAGCAGCCAGCTCGTCCCAGCGTCGGCAGCCGCCCCCGGGCGCCGCGCACCCGCTCAACCGCAAGAGCCTTCTGGCCCCCGGATCTGGCAGCGGCGGCGCGTCCCCACTGACCAGCGCGCAGGACAGCGCCTTCCTCAACGACGCGGACATGGTCATGAGCTTTGTGAACCTGGTGGAGTACGACAAGGAGTTCTCCCCTCGTCAGCGACACCACAAAGAGTTCAAGTTCAACTTATCCCAGATTCCTGAGGGTGAGGTGGTGACGGCTGCAGAATTCCGCATCTACAAGGACTGTGTTATGGGGAGTTTTAAAAACCAAACTTTTCTTATCAGCATTTATCAAGTCTTACAGGAGCATCAGCACAGAGACTCTGACCTGTTTTTGTTGGACACCCGTGTAGTATGGGCCTCAGAAGAAGGCTGGCTGGAATTTGACATCACGGCCACTAGCAATCTGTGGGTTGTGACTCCACAGCATAACATGGGGCTTCAGCTGAGCGTGGTGACAAGGGATGGAGTCCACGTCCACCCCCGAGCCGCAGGCCTGGTGGGCAGAGACGGCCCTTACGATAAGCAGCCCTTCATGGTGGCTTTCTTCAAAGTGAGTGAGGTCCACGTGCGCACCACCAGGTCAGCCTCCAGCCGGCGCCGACAACAGAGTCGTAATCGCTCTACCCAGTCCCAGGACGTGGCGCGGGTCTCCAGTGCTTCAGATTACAACAGCAGTGAATTGAAAACAGCCTGCAAGAGGCATGAGCTGTATGTGAGTTTCCAAGACCTGGGATGGCAGGACTGGATCATTGCACCCAAGGGCTATGCTGCCAATTACTGTGATGGAGAATGCTCCTTCCCTCTGGCTGATCATCTGAACTCCACTAATCATGCCATTGTGCAGACCTTGGTTAACTCTGTTAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCAACTAAGCTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTCTGAAAAAATACAGGAATATGGTTGTAAGAGCTTGTGGATGCCACTAA BMP6-ATGCCGGGGCTGGGGCGGAGGGCGCAGTGGCTGTGCTGGTGGTGGGGGCTGCTGTGCAGCTGCTGCGG 127ADHLGCCCCCGCCGCTGCGGCCGCCCTTGCCCGCTGCCGCGGCCGCCGCCGCCGGGGGGCAGCTGCTGGGGGlongACGGCGGGAGCCCCGGCCGCACGGAGCAGCCGCCGCCGTCGCCGCAGTCCTCCTCGGGCTTCCTGTACCGGCGGCTCAAGACGCAGGAGAAGCGGGAGATGCAGAAGGAGATCTTGTCGGTGCTGGGGCTCCCGCACCGGCCCCGGCCCCTGCACGGCCTCCAACAGCCGCAGCCCCCGGCGCTCCGGCAGCAGGAGGAGCAGCAGCAGCAGCAGCAGCTGCCTCGCGGAGAGCCCCCTCCCGGGCGACTGAAGTCCGCGCCCCTCTTCATGCTGGATCTGTACAACGCCCTGTCCGCCGACAACGACGAGGACGGGGCGTCGGAGGGGGAGAGGCAGCAGTCCTGGCCCCACGAAGCAGCCAGCTCGTCCCAGCGTCGGCAGCCGCCCCCGGGCGCCGCGCACCCGCTCAACCGCAAGAGCCTTCTGGCCCCCGGATCTGGCAGCGGCGGCGCGTCCCCACTGACCAGCGCGCAGGACAGCGCCTTCCTCAACGACGCGGACATGGTCATGAGCTTTGTGAACCTGGTGGAGTACGACAAGGAGTTCTCCCCTCGTCAGCGACACCACAAAGAGTTCAAGTTCAACTTATCCCAGATTCCTGAGGGTGAGGTGGTGACGGCTGCAGAATTCCGCATCTACAAGGACTGTGTTATGGGGAGTTTTAAAAACCAAACTTTTCTTATCAGCATTTATCAAGTCTTACAGGAGCATCAGCACAGAGACTCTGACCTGTTTTTGTTGGACACCCGTGTAGTATGGGCCTCAGAAGAAGGCTGGCTGGAATTTGACATCACGGCCACTAGCAATCTGTGGGTTGTGACTCCACAGCATAACATGGGGCTTCAGCTGAGCGTGGTGACAAGGGATGGAGTCCACGTCCACCCCCGAGCCGCAGGCCTGGTGGGCAGAGACGGCCCTTACGACAAGCAGCCCTTCATGGTGGCTTTCTTCAAAGTGAGTGAGGTGCACGTGCGCACCACCAGGTCAGCCTCCAGCCGGCGCCGACAACAGAGTCGTAATCGCTCTACCCAGTCCCAGGACGTGGCGCGGGTCTCCAGTGCTTCAGATTACAACAGCAGTGAATTGAAAACAGCCTGCAGGAAGCATGAGCTGTATGTGAGTTTCCAAGACCTGGGATGGCAGGACTGGATCATTGCACCCAAGGGCTATGCTGCCAATTACTGTGATGGAGAATGCTCCTTCCCACTCGCCGATCACCTGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCAACTAAGCTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTCTGAAAAAATACAGGAATATGGTTGTAAGAGCTTGTGGATGCCACTAA BMP6-ATGCCGGGGCTGGGGCGGAGGGCGCAGTGGCTGTGCTGGTGGTGGGGGCTGCTGTGCAGCTGCTGCGG 128RK-KRGCCCCCGCCGCTGCGGCCGCCCTTGCCCGCTGCCGCGGCCGCCGCCGCCGGGGGGCAGCTGCTGGGGGADHLACGGCGGGAGCCCCGGCCGCACGGAGCAGCCGCCGCCGTCGCCGCAGTCCTCCTCGGGCTTCCTGTACCGGCGGCTCAAGACGCAGGAGAAGCGGGAGATGCAGAAGGAGATCTTGTCGGTGCTGGGGCTCCCGCACCGGCCCCGGCCCCTGCACGGCCTCCAACAGCCGCAGCCCCCGGCGCTCCGGCAGCAGGAGGAGCAGCAGCAGCAGCAGCAGCTGCCTCGCGGAGAGCCCCCTCCCGGGCGACTGAAGTCCGCGCCCCTCTTCATGCTGGATCTGTACAACGCCCTGTCCGCCGACAACGACGAGGACGGGGCGTCGGAGGGGGAGAGGCAGCAGTCCTGGCCCCACGAAGCAGCCAGCTCGTCCCAGCGTCGGCAGCCGCCCCCGGGCGCCGCGCACCCGCTCAACCGCAAGAGCCTTCTGGCCCCCGGATCTGGCAGCGGCGGCGCGTCCCCACTGACCAGCGCGCAGGACAGCGCCTTCCTCAACGACGCGGACATGGTCATGAGCTTTGTGAACCTGGTGGAGTACGACAAGGAGTTCTCCCCTCGTCAGCGACACCACAAAGAGTTCAAGTTCAACTTATCCCAGATTCCTGAGGGTGAGGTGGTGACGGCTGCAGAATTCCGCATCTACAAGGACTGTGTTATGGGGAGTTTTAAAAACCAAACTTTTCTTATCAGCATTTATCAAGTCTTACAGGAGCATCAGCACAGAGACTCTGACCTGTTTTTGTTGGACACCCGTGTAGTATGGGCCTCAGAAGAAGGCTGGCTGGAATTTGACATCACGGCCACTAGCAATCTGTGGGTTGTGACTCCACAGCATAACATGGGGCTTCAGCTGAGCGTGGTGACAAGGGATGGAGTCCACGTCCACCCCCGAGCCGCAGGCCTGGTGGGCAGAGACGGCCCTTACGACAAGCAGCCCTTCATGGTGGCTTTCTTCAAAGTGAGTGAGGTGCACGTGCGCACCACCAGGTCAGCCTCCAGCCGGCGCCGACAACAGAGTCGTAATCGCTCTACCCAGTCCCAGGACGTGGCGCGGGTCTCCAGTGCTTCAGATTACAACAGCAGTGAATTGAAAACAGCCTGCAAGAGGCATGAGCTGTATGTGAGTTTCCAAGACCTGGGATGGCAGGACTGGATCATTGCACCCAAGGGCTATGCTGCCAATTACTGTGATGGAGAATGCTCCTTCCCACTCGCCGATCACCTGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCAACTAAGCTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTCTGAAAAAATACAGGAATATGGTTGTAAGAGCTTGTGGATGCCACTAA BMP6-ATGCCGGGGCTGGGGCGGAGGGCGCAGTGGCTGTGCTGGTGGTGGGGGCTGCTGTGCAGCTGCTGCGG 129RK-KRGCCCCCGCCGCTGCGGCCGCCCTTGCCCGCTGCCGCGGCCGCCGCCGCCGGGGGGCAGCTGCTGGGGGlongACGGCGGGAGCCCCGGCCGCACGGAGCAGCCGCCGCCGTCGCCGCAGTCCTCCTCGGGCTTCCTGTACCGGCGGCTCAAGACGCAGGAGAAGCGGGAGATGCAGAAGGAGATCTTGTCGGTGCTGGGGCTCCCGCACCGGCCCCGGCCCCTGCACGGCCTCCAACAGCCGCAGCCCCCGGCGCTCCGGCAGCAGGAGGAGCAGCAGCAGCAGCAGCAGCTGCCTCGCGGAGAGCCCCCTCCCGGGCGACTGAAGTCCGCGCCCCTCTTCATGCTGGATCTGTACAACGCCCTGTCCGCCGACAACGACGAGGACGGGGCGTCGGAGGGGGAGAGGCAGCAGTCCTGGCCCCACGAAGCAGCCAGCTCGTCCCAGCGTCGGCAGCCGCCCCCGGGCGCCGCGCACCCGCTCAACCGCAAGAGCCTTCTGGCCCCCGGATCTGGCAGCGGCGGCGCGTCCCCACTGACCAGCGCGCAGGACAGCGCCTTCCTCAACGACGCGGACATGGTCATGAGCTTTGTGAACCTGGTGGAGTACGACAAGGAGTTCTCCCCTCGTCAGCGACACCACAAAGAGTTCAAGTTCAACTTATCCCAGATTCCTGAGGGTGAGGTGGTGACGGCTGCAGAATTCCGCATCTACAAGGACTGTGTTATGGGGAGTTTTAAAAACCAAACTTTTCTTATCAGCATTTATCAAGTCTTACAGGAGCATCAGCACAGAGACTCTGACCTGTTTTTGTTGGACACCCGTGTAGTATGGGCCTCAGAAGAAGGCTGGCTGGAATTTGACATCACGGCCACTAGCAATCTGTGGGTTGTGACTCCACAGCATAACATGGGGCTTCAGCTGAGCGTGGTGACAAGGGATGGAGTCCACGTCCACCCCCGAGCCGCAGGCCTGGTGGGCAGAGACGGCCCTTACGACAAGCAGCCCTTCATGGTGGCTTTCTTCAAAGTGAGTGAGGTGCACGTGCGCACCACCAGGTCAGCCTCCAGCCGGCGCCGACAACAGAGTCGTAATCGCTCTACCCAGTCCCAGGACGTGGCGCGGGTCTCCAGTGCTTCAGATTACAACAGCAGTGAATTGAAAACAGCCTGCAAGAGGCATGAGCTGTATGTGAGTTTCCAAGACCTGGGATGGCAGGACTGGATCATTGCACCCAAGGGCTATGCTGCCAATTACTGTGATGGAGAATGCTCCTTCCCACTCAACGCACACATGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCAACTAAGCTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTCTGAAAAAATACAGGAATATGGTTGTAAGAGCTTGTGGATGCCACTAA BMP6-ATGCCGGGGCTGGGGCGGAGGGCGCAGTGGCTGTGCTGGTGGTGGGGGCTGCTGTGCAGCTGCTGCGG 130B-RK-GCCCCCGCCGCTGCGGCCGCCCTTGCCCGCTGCCGCGGCCGCCGCCGCCGGGGGGCAGCTGCTGGGGG KRACGGCGGGAGCCCCGGCCGCACGGAGCAGCCGCCGCCGTCGCCGCAGTCCTCCTCGGGCTTCCTGTACCGGCGGCTCAAGACGCAGGAGAAGCGGGAGATGCAGAAGGAGATCTTGTCGGTGCTGGGGCTCCCGCACCGGCCCCGGCCCCTGCACGGCCTCCAACAGCCGCAGCCCCCGGCGCTCCGGCAGCAGGAGGAGCAGCAGCAGCAGCAGCAGCTGCCTCGCGGAGAGCCCCCTCCCGGGCGACTGAAGTCCGCGCCCCTCTTCATGCTGGATCTGTACAACGCCCTGTCCGCCGACAACGACGAGGACGGGGCGTCGGAGGGGGAGAGGCAGCAGTCCTGGCCCCACGAAGCAGCCAGCTCGTCCCAGCGTCGGCAGCCGCCCCCGGGCGCCGCGCACCCGCTCAACCGCAAGAGCCTTCTGGCCCCCGGATCTGGCAGCGGCGGCGCGTCCCCACTGACCAGCGCGCAGGACAGCGCCTTCCTCAACGACGCGGACATGGTCATGAGCTTTGTGAACCTGGTGGAGTACGACAAGGAGTTCTCCCCTCGTCAGCGACACCACAAAGAGTTCAAGTTCAACTTATCCCAGATTCCTGAGGGTGAGGTGGTGACGGCTGCAGAATTCCGCATCTACAAGGACTGTGTTATGGGGAGTTTTAAAAACCAAACTTTTCTTATCAGCATTTATCAAGTCTTACAGGAGCATCAGCACAGAGACTCTGACCTGTTTTTGTTGGACACCCGTGTAGTATGGGCCTCAGAAGAAGGCTGGCTGGAATTTGACATCACGGCCACTAGCAATCTGTGGGTTGTGACTCCACAGCATAACATGGGGCTTCAGCTGAGCGTGGTGACAAGGGATGGAGTCCACGTCCACCCCCGAGCCGCAGGCCTGGTGGGCAGAGACGGCCCTTACGATAAGCAGCCCTTCATGGTGGCTTTCTTCAAAGTGAGTGAGGTCCACGTGCGCACCACCAGGTCAGCCTCCAGCCGGCGCCGACAACAGAGTCGTAATCGCTCTACCCAGTCCCAGGACGTGGCGCGGGTCTCCAGTGCTTCAGATTACAACAGCAGTGAATTGAAAACAGCCTGCAAGAGGCATGAGCTGTATGTGAGTTTCCAAGACCTGGGATGGCAGGACTGGATCATTGCACCCAAGGGCTATGCTGCCAATTACTGTCACGGAGAATGCCCTTTTCCTCTGGCTGATCATCTGAACTCCACTAATCATGCCATTGTGCAGACCTTGGTTAACTCTGTTAACTCTAAGATTCCTAAGGCATGCTGTGTCCCAACTAAGCTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTCTGAAAAAATACAGGAATATGGTTGTAAGAGCTTGTGGATGCCACTAA BMP9-ATGTGTCCTGGCGCTCTGTGGGTGGCCCTGCCTCTGCTGTCTCTGCTGGCCGGCAGCCTGCAGGGCAA 131E2 GCCTCTGCAGTCCTGGGGCAGAGGCTCCGCTGGCGGCAATGCTCACAGCCCTCTGGGAGTGCCTGGCGGCGGACTGCCCGAGCACACCTTCAACCTGAAGATGTTCCTGGAAAACGTGAAGGTGGACTTCCTGCGGTCCCTGAACCTGTCCGGCGTGCCCAGCCAGGACAAGACCCGGGTGGAACCCCCCCAGTACATGATCGACCTGTACAACCGGTACACCTCCGACAAGTCCACCACCCCCGCCTCCAACATCGTGCGGTCCTTCAGCATGGAAGATGCCATCTCCATTACCGCCACCGAGGACTTCCCATTTCAGAAGCACATCCTGCTGTTCAACATCTCCATCCCCCGGCACGAGCAGATCACCAGAGCCGAGCTGCGGCTGTACGTGTCCTGCCAGAACCACGTGGACCCCTCCCACGACCTGAAGGGCTCCGTGGTGATCTACGACGTGCTGGACGGCACCGACGCCTGGGACTCCGCTACCGAGACAAAGACCTTCCTGGTGTCCCAGGATATCCAGGACGAGGGCTGGGAGACACTGGAAGTGTCCTCCGCCGTGAAGAGATGGGTGCGATCCGACTCCACCAAGTCCAAGAACAAGCTGGAAGTGACCGTGGAATCCCACCGGAAGGGCTGCGACACCCTGGACATCTCCGTGCCCCCTGGCTCCCGGAACCTGCCCTTCTTCGTGGTGTTCTCCAACGACCACTCCTCCGGCACCAAAGAGACACGGCTGGAACTGAGAGAGATGATCTCCCACGAGCAGGAATCCGTCCTGAAGAAGCTGTCCAAGGACGGCTCCACCGAGGCCGGCGAGTCCTCTCACGAAGAGGACACAGACGGCCACGTGGCAGCTGGCTCTACCCTGGCCAGACGGAAGCGGTCCGCCGGAGCTGGCTCCCACTGCCAGAAAACCTCCCTGAGAGTGAACTTCGAGGACATCGGCTGGGACAGCTGGATCATTGCCCCCAAAGAGTACGAGGCCTACGAGTGCCACGGCGAGTGCCCCTTCCCCCTGGCCGACCACCTGAACTCCACCAACCACGCCATCGTGCAGACCCTGGTGAACTCCGTGAACTCCAAAATCCCCAAGGCCTGCTGCGTGCCCACCAAGCTGTCCCCCATCAGCGTGCTGTACAAGGACGACATGGGCGTGCCAACCCTGAAGTACCACTACGAGGGCATGTCCGTGGCCGAGTGTGGCTGCCGGTGA BMP9-ATGTGTCCTGGCGCTCTGTGGGTGGCCCTGCCTCTGCTGTCTCTGCTGGCCGGCAGCCTGCAGGGCAA 132E6 GCCTCTGCAGTCCTGGGGCAGAGGCTCCGCTGGCGGCAATGCTCACAGCCCTCTGGGAGTGCCTGGCGGCGGACTGCCCGAGCACACCTTCAACCTGAAGATGTTCCTGGAAAACGTGAAGGTGGACTTCCTGCGGTCCCTGAACCTGTCCGGCGTGCCCAGCCAGGACAAGACCCGGGTGGAACCCCCCCAGTACATGATCGACCTGTACAACCGGTACACCTCCGACAAGTCCACCACCCCCGCCTCCAACATCGTGCGGTCCTTCAGCATGGAAGATGCCATCTCCATTACCGCCACCGAGGACTTCCCATTTCAGAAGCACATCCTGCTGTTCAACATCTCCATCCCCCGGCACGAGCAGATCACCAGAGCCGAGCTGCGGCTGTACGTGTCCTGCCAGAACCACGTGGACCCCTCCCACGACCTGAAGGGCTCCGTGGTGATCTACGACGTGCTGGACGGCACCGACGCCTGGGACTCCGCTACCGAGACAAAGACCTTCCTGGTGTCCCAGGATATCCAGGACGAGGGCTGGGAGACACTGGAAGTGTCCTCCGCCGTGAAGAGATGGGTGCGATCCGACTCCACCAAGTCCAAGAACAAGCTGGAAGTGACCGTGGAATCCCACCGGAAGGGCTGCGACACCCTGGACATCTCCGTGCCCCCTGGCTCCCGGAACCTGCCCTTCTTCGTGGTGTTCTCCAACGACCACTCCTCCGGCACCAAAGAGACACGGCTGGAACTGAGAGAGATGATCTCCCACGAGCAGGAATCCGTCCTGAAGAAGCTGTCCAAGGACGGCTCCACCGAGGCCGGCGAGTCCTCTCACGAAGAGGACACAGACGGCCACGTGGCAGCTGGCTCTACCCTGGCCAGACGGAAGCGGTCCGCCGGAGCTGGCTCCCACTGCCAGAAAACCTCCCTGAGAGTGAACTTCGAGGACATCGGCTGGGACAGCTGGATCATTGCCCCCAAAGAGTACGAGGCCTACGAGTGCGACGGCGAGTGCTCCTTCCCCCTGAACGCCCACATGAACGCCACCAACCACGCCATCGTGCAGACCCTGGTGCACCTGATGAACCCCGAGTACGTGCCCAAGCCCTGCTGCGCCCCCACCAAGCTGTCCCCCATCAGCGTGCTGTACAAGGACGACATGGGCGTGCCAACCCTGAAGTACCACTACGAGGGCATGTCCGTGGCCGAGTGTGGCTGCCGGTGA BMP6-ATGCCGGGGCTGGGGCGGAGGGCGCAGTGGCTGTGCTGGTGGTGGGGGCTGCTGTGCAGCTGCTGCGGG133 ShortCCCCCGCCGCTGCGGCCGCCCTTGCCCGCTGCCGCGGCCGCCGCCGCCGGGGGGCAGCTGCTGGGGGACGGCGGGAGCCCCGGCCGCACGGAGCAGCCGCCGCCGTCGCCGCAGTCCTCCTCGGGCTTCCTGTACCGGCGGCTCAAGACGCAGGAGAAGCGGGAGATGCAGAAGGAGATCTTGTCGGTGCTGGGGCTCCCGCACCGGCCCCGGCCCCTGCACGGCCTCCAACAGCCGCAGCCCCCGGCGCTCCGGCAGCAGGAGGAGCAGCAGCAGCAGCAGCAGCTGCCTCGCGGAGAGCCCCCTCCCGGGCGACTGAAGTCCGCGCCCCTCTTCATGCTGGATCTGTACAACGCCCTGTCCGCCGACAACGACGAGGACGGGGCGTCGGAGGGGGAGAGGCAGCAGTCCTGGCCCCACGAAGCAGCCAGCTCGTCCCAGCGTCGGCAGCCGCCCCCGGGCGCCGCGCACCCGCTCAACCGCAAGAGCCTTCTGGCCCCCGGATCTGGCAGCGGCGGCGCGTCCCCACTGACCAGCGCGCAGGACAGCGCCTTCCTCAACGACGCGGACATGGTCATGAGCTTTGTGAACCTGGTGGAGTACGACAAGGAGTTCTCCCCTCGTCAGCGACACCACAAAGAGTTCAAGTTCAACTTATCCCAGATTCCTGAGGGTGAGGTGGTGACGGCTGCAGAATTCCGCATCTACAAGGACTGTGTTATGGGGAGTTTTAAAAACCAAACTTTTCTTATCAGCATTTATCAAGTCTTACAGGAGCATCAGCACAGAGACTCTGACCTGTTTTTGTTGGACACCCGTGTAGTATGGGCCTCAGAAGAAGGCTGGCTGGAATTTGACATCACGGCCACTAGCAATCTGTGGGTTGTGACTCCACAGCATAACATGGGGCTTCAGCTGAGCGTGGTGACAAGGGATGGAGTCCACGTCCACCCCCGAGCCGCAGGCCTGGTGGGCAGAGACGGCCCTTACGATAAGCAGCCCTTCATGGTGGCTTTCTTCAAAGTGAGTGAGGTCCACGTGCGCACCACCAGGTCAGCCTCCAGCCGGCGCCGACAACAGAGTCGTAATCGCTCTACCCAGTCCCAGGACGTGGCGCGGGTCTCCAGTGCTTCAGATTACAACAGCAGTGAATTGAAAACAGCCTGCAGGAAGCATGAGCTGTATGTGAGTTTCCAAGACCTGGGATGGCAGGACTGGATCATTGCACCCAAGGGCTATGCTGCCAATTACTGTGATGGAGAATGCTCCTTCCCACTCAACGCACACATGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCAACTAAGCTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTCTGAAAAAATACAGGAATATGGTTGTAAGAGCTTGTGGATGCCACTAA BMP6-ATGCCGGGGCTGGGGCGGAGGGCGCAGTGGCTGTGCTGGTGGTGGGGGCTGCTGTGCAGCTGCTGCGG 134SA GCCCCCGCCGCTGCGGCCGCCCTTGCCCGCTGCCGCGGCCGCCGCCGCCGGGGGGCAGCTGCTGGGGGACGGCGGGAGCCCCGGCCGCACGGAGCAGCCGCCGCCGTCGCCGCAGTCCTCCTCGGGCTTCCTGTACCGGCGGCTCAAGACGCAGGAGAAGCGGGAGATGCAGAAGGAGATCTTGTCGGTGCTGGGGCTCCCGCACCGGCCCCGGCCCCTGCACGGCCTCCAACAGCCGCAGCCCCCGGCGCTCCGGCAGCAGGAGGAGCAGCAGCAGCAGCAGCAGCTGCCTCGCGGAGAGCCCCCTCCCGGGCGACTGAAGTCCGCGCCCCTCTTCATGCTGGATCTGTACAACGCCCTGTCCGCCGACAACGACGAGGACGGGGCGTCGGAGGGGGAGAGGCAGCAGTCCTGGCCCCACGAAGCAGCCAGCTCGTCCCAGCGTCGGCAGCCGCCCCCGGGCGCCGCGCACCCGCTCAACCGCAAGAGCCTTCTGGCCCCCGGATCTGGCAGCGGCGGCGCGTCCCCACTGACCAGCGCGCAGGACAGCGCCTTCCTCAACGACGCGGACATGGTCATGAGCTTTGTGAACCTGGTGGAGTACGACAAGGAGTTCTCCCCTCGTCAGCGACACCACAAAGAGTTCAAGTTCAACTTATCCCAGATTCCTGAGGGTGAGGTGGTGACGGCTGCAGAATTCCGCATCTACAAGGACTGTGTTATGGGGAGTTTTAAAAACCAAACTTTTCTTATCAGCATTTATCAAGTCTTACAGGAGCATCAGCACAGAGACTCTGACCTGTTTTTGTTGGACACCCGTGTAGTATGGGCCTCAGAAGAAGGCTGGCTGGAATTTGACATCACGGCCACTAGCAATCTGTGGGTTGTGACTCCACAGCATAACATGGGGCTTCAGCTGAGCGTGGTGACAAGGGATGGAGTCCACGTCCACCCCCGAGCCGCAGGCCTGGTGGGCAGAGACGGCCCTTACGATAAGCAGCCCTTCATGGTGGCTTTCTTCAAAGTGAGTGAGGTCCACGTGCGCACCACCAGGTCAGCCTCCAGCCGGCGCCGACAACAGAGTCGTAATCGCTCTACCCAGTCCCAGGACGTGGCGCGGGTCTCCAGTGCTTCAGATTACAACAGCAGTGAATTGAAAACAGCCTGCAGGAAGCATGAGCTGTATGTGAGTTTCCAAGACCTGGGATGGCAGGACTGGATCATTGCACCCAAGGGCTATGCTGCCAATTACTGTGATGGAGAATGCTCCTTCCCACTCAACGCAGCCATGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCAACTAAGCTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTCTGAAAAAATACAGGAATATGGTTGTAAGAGCTTGTGGATGCCACTAA MBP6-ATGCCGGGGCTGGGGCGGAGGGCGCAGTGGCTGTGCTGGTGGTGGGGGCTGCTGTGCAGCTGCTGCGG 135SL GCCCCCGCCGCTGCGGCCGCCCTTGCCCGCTGCCGCGGCCGCCGCCGCCGGGGGGCAGCTGCTGGGGGACGGCGGGAGCCCCGGCCGCACGGAGCAGCCGCCGCCGTCGCCGCAGTCCTCCTCGGGCTTCCTGTACCGGCGGCTCAAGACGCAGGAGAAGCGGGAGATGCAGAAGGAGATCTTGTCGGTGCTGGGGCTCCCGCACCGGCCCCGGCCCCTGCACGGCCTCCAACAGCCGCAGCCCCCGGCGCTCCGGCAGCAGGAGGAGCAGCAGCAGCAGCAGCAGCTGCCTCGCGGAGAGCCCCCTCCCGGGCGACTGAAGTCCGCGCCCCTCTTCATGCTGGATCTGTACAACGCCCTGTCCGCCGACAACGACGAGGACGGGGCGTCGGAGGGGGAGAGGCAGCAGTCCTGGCCCCACGAAGCAGCCAGCTCGTCCCAGCGTCGGCAGCCGCCCCCGGGCGCCGCGCACCCGCTCAACCGCAAGAGCCTTCTGGCCCCCGGATCTGGCAGCGGCGGCGCGTCCCCACTGACCAGCGCGCAGGACAGCGCCTTCCTCAACGACGCGGACATGGTCATGAGCTTTGTGAACCTGGTGGAGTACGACAAGGAGTTCTCCCCTCGTCAGCGACACCACAAAGAGTTCAAGTTCAACTTATCCCAGATTCCTGAGGGTGAGGTGGTGACGGCTGCAGAATTCCGCATCTACAAGGACTGTGTTATGGGGAGTTTTAAAAACCAAACTTTTCTTATCAGCATTTATCAAGTCTTACAGGAGCATCAGCACAGAGACTCTGACCTGTTTTTGTTGGACACCCGTGTAGTATGGGCCTCAGAAGAAGGCTGGCTGGAATTTGACATCACGGCCACTAGCAATCTGTGGGTTGTGACTCCACAGCATAACATGGGGCTTCAGCTGAGCGTGGTGACAAGGGATGGAGTCCACGTCCACCCCCGAGCCGCAGGCCTGGTGGGCAGAGACGGCCCTTACGATAAGCAGCCCTTCATGGTGGCTTTCTTCAAAGTGAGTGAGGTCCACGTGCGCACCACCAGGTCAGCCTCCAGCCGGCGCCGACAACAGAGTCGTAATCGCTCTACCCAGTCCCAGGACGTGGCGCGGGTCTCCAGTGCTTCAGATTACAACAGCAGTGAATTGAAAACAGCCTGCAGGAAGCATGAGCTGTATGTGAGTTTCCAAGACCTGGGATGGCAGGACTGGATCATTGCACCCAAGGGCTATGCTGCCAATTACTGTGATGGAGAATGCTCCTTCCCACTCAACGCACACCTCAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCAACTAAGCTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTCTGAAAAAATACAGGAATATGGTTGTAAGAGCTTGTGGATGCCACTAA BMP-E-ATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG 136NR CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTGTGGCTCCCCCGGGGTATCACGCCTTTTACTGCGATGGAGAATGCTCCTTCCCACTCAACGCACACATGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCCACCAAGCTGAGACCCATGTCCATGTTGTACTATGATGATGGTCAAAACATCATCAAAAAGGACATTCAGAACATGATCGTGGAGGAGTGTGGGTGCTCATAG BMP-ATGGTGGCTGGCACCAGATGTCTGCTGGCCCTGCTGCTGCCCCAGGTGCTGCTGGGCGGAGCTGCTGG 137GER-NRACTGGTGCCCGAGCTGGGCAGAAGAAAGTTCGCCGCTGCCTCCTCTGGCCGGCCTTCCAGCCAGCCTTCCGACGAGGTGCTGTCCGAGTTCGAGCTGCGGCTGCTGTCCATGTTCGGCCTGAAGCAGCGGCCCACCCCTTCTAGGGACGCCGTGGTGCCCCCCTACATGCTGGACCTGTACCGGCGGCACTCCGGCCAGCCTGGATCTCCTGCCCCCGACCACAGACTGGAAAGAGCCGCCTCCCGGGCCAACACCGTGCGGTCTTTCCACCACGAGGAATCCCTGGAAGAACTGCCCGAGACATCCGGCAAGACCACCCGGCGGTTCTTTTTCAACCTGTCATCCATCCCCACCGAAGAGTTCATCACCTCCGCCGAGCTGCAGGTGTTCCGCGAGCAGATGCAGGACGCCCTGGGCAACAACTCCTCCTTCCACCACCGGATCAACATCTACGAGATCATCAAGCCCGCCACCGCCAACTCCAAGTTCCCCGTGACCCGGCTGCTGGACACCCGGCTGGTGAACCAGAACGCCTCCAGATGGGAGTCCTTCGACGTGACCCCTGCCGTGATGAGATGGACCGCCCAGGGCCACGCCAACCACGGCTTTGTGGTGGAAGTGGCCCACCTGGAAGAGAAGCAGGGCGTGTCCAAGCGGCACGTGCGGATCTCTCGGTCCCTGCACCAGGACGAGCACAGCTGGTCCCAGATCCGGCCCCTGCTGGTGACATTCGGCCACGATGGCAAGGGCCACCCCCTGCACAAGAGAGAGAAGCGGCAGGCCAAGCACAAGCAGCGGAAGCGGCTGAAGTCCTCCTGCAAGCGGCACCCCCTGTACGTGGACTTCTCCGACGTGGGCTGGAACGACTGGATCATTGCCCCCAGGGGCTACGCCGCCTTCTACTGCGACGGCGAGTGCTCCTTCCCCCTGAACGCCCACATGAACGCCACCAACCACGCCATCGTGCAGACCCTGGTGCACCTGATGAACCCCGAGTACGTGCCCAAGCCTTGTTGCGCCCCCACCAAGCTGAGACCCATGTCCATGTTGTACTATGATGATGGTCAAAACATCATCAAAAAGGACATTCAGAACATGATCGTGGAGGAGTGTGGGTGCTCATAG BMP-E-ATGGTGGCCGGGACCCGCTGTCTTCTAGCGTTGCTGCTTCCCCAGGTCCTCCTGGGCGGCGCGGCTGG 138NR-6CCTCGTTCCGGAGCTGGGCCGCAGGAAGTTCGCGGCGGCGTCGTCGGGCCGCCCCTCATCCCAGCCCTCTGACGAGGTCCTGAGCGAGTTCGAGTTGCGGCTGCTCAGCATGTTCGGCCTGAAACAGAGACCCACCCCCAGCAGGGACGCCGTGGTGCCCCCCTACATGCTAGACCTGTATCGCAGGCACTCAGGTCAGCCGGGCTCACCCGCCCCAGACCACCGGTTGGAGAGGGCAGCCAGCCGAGCCAACACTGTGCGCAGCTTCCACCATGAAGAATCTTTGGAAGAACTACCAGAAACGAGTGGGAAAACAACCCGGAGATTCTTCTTTAATTTAAGTTCTATCCCCACGGAGGAGTTTATCACCTCAGCAGAGCTTCAGGTTTTCCGAGAACAGATGCAAGATGCTTTAGGAAACAATAGCAGTTTCCATCACCGAATTAATATTTATGAAATCATAAAACCTGCAACAGCCAACTCGAAATTCCCCGTGACCAGACTTTTGGACACCAGGTTGGTGAATCAGAATGCAAGCAGGTGGGAAAGTTTTGATGTCACCCCCGCTGTGATGCGGTGGACTGCACAGGGACACGCCAACCATGGATTCGTGGTGGAAGTGGCCCACTTGGAGGAGAAACAAGGTGTCTCCAAGAGACATGTTAGGATAAGCAGGTCTTTGCACCAAGATGAACACAGCTGGTCACAGATAAGGCCATTGCTAGTAACTTTTGGCCATGATGGAAAAGGGCATCCTCTCCACAAAAGAGAAAAACGTCAAGCCAAACACAAACAGCGGAAACGCCTTAAGTCCAGCTGTAAGAGACACCCTTTGTACGTGGACTTCAGTGACGTGGGGTGGAATGACTGGATTGTGGCTCCCCCGGGGTATCACGCCTTTTACTGCGATGGAGAATGCTCCTTCCCACTCAACGCACACATGAATGCAACCAACCACGCGATTGTGCAGACCTTGGTTCACCTTATGAACCCCGAGTATGTCCCCAAACCGTGCTGTGCGCCAACTAAGCTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTCTGAAAAAATACAGGAATATGGTTGTAAGAGCTTGTGGATGCCACTAA BMP-ATGGTGGCTGGCACCAGATGTCTGCTGGCCCTGCTGCTGCCCCAGGTGCTGCTGGGCGGAGCTGCTGG 139GER-ACTGGTGCCCGAGCTGGGCAGAAGAAAGTTCGCCGCTGCCTCCTCTGGCCGGCCTTCCAGCCAGCCTTNR-6CCGACGAGGTGCTGTCCGAGTTCGAGCTGCGGCTGCTGTCCATGTTCGGCCTGAAGCAGCGGCCCACCCCTTCTAGGGACGCCGTGGTGCCCCCCTACATGCTGGACCTGTACCGGCGGCACTCCGGCCAGCCTGGATCTCCTGCCCCCGACCACAGACTGGAAAGAGCCGCCTCCCGGGCCAACACCGTGCGGTCTTTCCACCACGAGGAATCCCTGGAAGAACTGCCCGAGACATCCGGCAAGACCACCCGGCGGTTCTTTTTCAACCTGTCATCCATCCCCACCGAAGAGTTCATCACCTCCGCCGAGCTGCAGGTGTTCCGCGAGCAGATGCAGGACGCCCTGGGCAACAACTCCTCCTTCCACCACCGGATCAACATCTACGAGATCATCAAGCCCGCCACCGCCAACTCCAAGTTCCCCGTGACCCGGCTGCTGGACACCCGGCTGGTGAACCAGAACGCCTCCAGATGGGAGTCCTTCGACGTGACCCCTGCCGTGATGAGATGGACCGCCCAGGGCCACGCCAACCACGGCTTTGTGGTGGAAGTGGCCCACCTGGAAGAGAAGCAGGGCGTGTCCAAGCGGCACGTGCGGATCTCTCGGTCCCTGCACCAGGACGAGCACAGCTGGTCCCAGATCCGGCCCCTGCTGGTGACATTCGGCCACGATGGCAAGGGCCACCCCCTGCACAAGAGAGAGAAGCGGCAGGCCAAGCACAAGCAGCGGAAGCGGCTGAAGTCCTCCTGCAAGCGGCACCCCCTGTACGTGGACTTCTCCGACGTGGGCTGGAACGACTGGATCATTGCCCCCAGGGGCTACGCCGCCTTCTACTGCGACGGCGAGTGCTCCTTCCCCCTGAACGCCCACATGAACGCCACCAACCACGCCATCGTGCAGACCCTGGTGCACCTGATGAACCCCGAGTACGTGCCCAAGCCTTGTTGCGCCCCAACTAAGCTAAATGCCATCTCGGTTCTTTACTTTGATGACAACTCCAATGTCATTCTGAAAAAATACAGGAATATGGTTGTAAGAGCTTGTGGATGCCACTAA

In other embodiments, the nucleic acid molecule encoding a designer BMPcomprises a nucleic acid sequence at least 40%, 50%, 60%, 65%, 70%, 75%,80%, 85%, 87%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99% identical toone of the nucleic acid sequences set forth in SEQ ID NOs:74-139 or afragment thereof. In other embodiments, the nucleic acid moleculeencoding a designer BMP comprises a nucleic acid sequence at least 40%,50%, 60%, 65%, 70%, 75%, 80%, 85%, 87%, 90%, 92%, 93%, 94%, 95%, 96%,97%, 98%, 99% identical to one of the nucleic acid sequences set forthin Table 8 or a fragment thereof. In another embodiment, the nucleicacid molecule encoding a designer BMP comprises the nucleic acidsequence of any sequence set forth in SEQ ID NOs:74-139. In yet anotherembodiment, the nucleic acid molecule consists of the nucleic acidsequence of any one of the nucleic acid sequences of SEQ ID NOs:74-139.

In another embodiment, the nucleic acid molecule encoding a designer BMPcomprises a nucleic acid sequence at least 40%, 50%, 60%, 65%, 70%, 75%,80%, 85%, 87%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99% identical tothe nucleic acid sequence of SEQ ID NO:78, or a fragment thereof. Inanother embodiment, the nucleic acid molecule encoding a designer BMPcomprises the nucleic acid sequence of SEQ ID NO:78. In yet anotherembodiment, the nucleic acid molecule consists of the nucleic acidsequence of SEQ ID NO:78 encoding BMPE.

In another embodiment, the nucleic acid molecule encoding a designer BMPcomprises a nucleic acid sequence at least 40%, 50%, 60%, 65%, 70%, 75%,80%, 85%, 87%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99% identical tothe nucleic acid sequence of SEQ ID NO:80, or a fragment thereof. Inanother embodiment, the nucleic acid molecule encoding a designer BMPcomprises the nucleic acid sequence of SEQ ID NO:80. In yet anotherembodiment, the nucleic acid molecule consists of the nucleic acidsequence of SEQ ID NO:80 encoding BMPG.

In another embodiment, the nucleic acid molecule encoding a designer BMPcomprises a nucleic acid sequence at least 40%, 50%, 60%, 65%, 70%, 75%,80%, 85%, 87%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99% identical tothe nucleic acid sequence of SEQ ID NO:102, or a fragment thereof. Inanother embodiment, the nucleic acid molecule encoding a designer BMPcomprises the nucleic acid sequence of SEQ ID NO:102. In yet anotherembodiment, the nucleic acid molecule consists of the nucleic acidsequence of SEQ ID NO:102 encoding BMPGE.

In another embodiment, the nucleic acid molecule encoding a designer BMPcomprises a nucleic acid sequence at least 40%, 50%, 60%, 65%, 70%, 75%,80%, 85%, 87%, 90%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99% identical tothe nucleic acid sequence of SEQ ID NO:103, or a fragment thereof. Inanother embodiment, the nucleic acid molecule encoding a designer BMPcomprises the nucleic acid sequence of SEQ ID NO:103. In yet anotherembodiment, the nucleic acid molecule consists of the nucleic acidsequence of SEQ ID NO:103 encoding BMPGER.

Methods of Producing Designer BMPs

BMPs are naturally expressed as pro-proteins comprising a longprodomain, one or more cleavage sites, and a mature domain. Thispro-protein is then processed by the cellular machinery to yield a,typically, dimeric mature BMP molecule. In some embodiments, thedesigner BMPs are produced in a similar manner. The prodomain isbelieved to play a role in the folding and processing of BMPs.Furthermore, in some BMPs, the prodomain may noncovalently bind to themature protein and act as a solubility enhancer, chaperone, orinhibitor. In some embodiments, BMPs may be produced as mature domainsproduced directly from or refolded from inclusion bodies. In otherembodiments, the BMPs are produced via chemical synthesis or any otherknown method for protein production.

In one embodiment, the designer BMP is producing using chemicalsynthesis methods such as, but not limited to, synthetic methodswell-known in the art.

In some embodiments, nucleic acids encoding designer BMPs are preparedby total gene synthesis or by site directed mutagenesis of a nucleicacid encoding a wild type, designer, or variant BMP. Methods includetemplate directed ligation, PCR, cassette mutagenesis, site-directedmutagenesis, restriction enzyme digestion and ligation, or othertechniques that are well known in the art (see, e.g., Prodromou et al.,Protein Eng 5:827-9 (1992); Jayaraman et al., Biotechniques 12:392-8(1992); Chalmers et al., Biotechniques 30:249-52 (2001); and Sambrookand Russell, In: Molecular Cloning, A Laboratory Approach, Cold SpringHarbor Press, Cold Spring Harbor, N.Y. (2001)).

In some embodiments, an expression vector that comprises a gene encodinga designer BMP is prepared. Numerous types of appropriate expressionvectors and suitable regulatory sequences for a variety of host cellsare known in the art. The expression vectors may contain transcriptionaland translational regulatory sequences including by not limited topromoter sequences, ribosomal binding sites, transcriptional terminatorsignals, polyadenylation signals, and enhancer or activator sequences.In some embodiments, the regulatory sequences include a promoter andtranscriptional start and stop sequences. In addition, the expressionvector may comprise additional elements, such as two replication systemsto allow it to be maintained in two organisms. The expression vectorsmay be extrachromasomal vectors or vectors that integrate into a hostcell's genome. In some embodiments, the expression vector contains atleast one sequence homologous to a host cell's genome to promoteintegration into the genome. Constructs for integrating vectors are wellknown in the art. In some embodiments, the expression vector comprises aselectable marker gene to allow the selection of a stably transformedhost cell. Selection marker genes are well known in the art and willvary with the host cell used.

The expression vector may include a secretory leader sequence or signalpeptide sequence that provides for secretion of the designer BMP fromthe host cell. Suitable secretory leader sequences and signal peptidesare known in the art.

Nucleic acids encoding designer BMPs may be introduced into host cellseither alone or in combination with an expression vector so that thedesigner BMP is expressed from the nucleic acid. The method ofintroduction is largely dictated by the host cell type. Exemplarymethods of transfection/transformation include CaPO₄ precipitation,liposome fusion, electroporation, viral infection, dextran-mediatedtransfection, polybrene-mediated transfection, protoplast fusion, directmicroinjection, and other methods known in the art. Nucleic acidsencoding designer BMPs may stable integrate into the host cell genome ormay exist transiently or stably in the cytoplasm.

Appropriate host cells for expressing designer BMPs include any cellsuitable for expressing wild type or native BMPs, including, but notlimited to yeast, bacteria, archaebacteria, fungi, insect, and animalcells. In some embodiments the host cell is Saccharomyces cerevisiae orEscheria coli. In some embodiments, the host cell is a mammalian cellsuch as 293 (e.g., 293-T and 293-EBNA), BHK, CHO (e.g., CHOK1 and DG44),COS, Jurkat, NIH3T3, or C2C12 cells. Other suitable cells may be foundin the ATCC catalog. Designer BMPs may be produced in more complexorganisms, including but not limited to plants and animals. In oneembodiment, the cells may be additionally genetically engineered, i.e.,to contain exogenous nucleic acids other than the expression vectorcomprising the designer BMP nucleic acid.

In some embodiments, designer BMPs are produced by culturing a host celltransformed with an expression vector containing a nucleic acid encodinga designer BMP under the appropriate conditions to induce or causeexpression of the designer BMP. The conditions appropriate for designerBMP expression are the same conditions known to be appropriate forexpressing native or wild type BMPs. These conditions will vary with thechoice of expression vector and host cell, and may be easily ascertainedby one skilled in the art through routine experimentation.

In some embodiments, the designer BMPs may be purified or isolated afterexpression. Standard purification methods include electrophoretic,molecular, immunological, and chromatographic techniques, including ionexchange, hydrophobic, affinity, and reverse-phase HPLC chromatography,and chromatofocusing. General guidance in suitable purificationtechniques may be found in Scopes, In: Protein Purification,Springer-Verlag, NY, 3^(rd) Ed. (1994). The degree of purificationnecessary will vary depending on the desired use, and in some instancesno purification will be necessary.

Purification from bacterial cells may result in the expression of BMPsin inclusion bodies and a subsequent step of refolding in a CHAPS/Highsalt system. Purification from mammalian cells may involve a two-steppurification via Cellufine-Sulfate and Reversed Phase chromatographycolumns.

In some embodiments, the designer BMPs may be modified covalently ornon-covalently. Covalent modifications may be introduced to a protein byreacting targeted amino acid residues of the protein with an organicderivatizing agent capable of reacting with selected side chains orterminal residues. Optimal sites for modification can be chosen using avariety of criteria, including but not limited to visual inspection,structural analysis, sequence analysis, and molecular simulation.

In some embodiments, designer BMPs may be labeled with at least oneelement, isotope, or chemical compound. The label may be an isotopiclabel, such as a radioactive or heavy isotope. In some embodiments, thelabel may be an immune label such as an antibody or antigen. In someembodiments, the label may be a colored or fluorescent label, such asfluorescein. In some embodiments, the label may be biotin, a tag (e.g.,FLAG, Myc, His).

The designer BMPs may be derivatized with bifunctional agents tocrosslink a designer BMP to a support matrix or surface for use inpurifying antibodies or proteins that bind to the proteins or to detectbinding in screening assays. Commonly used crosslinking agents includebut are not limited to 1,1-bis(diazoacetyl)-2-phenylethane,glutaraldehyde, N-hydroxysuccinimide esters, for example, esters with4-azidosalicylic acid, homobifunctional imidoesters, includingdisuccinimidyl esters such as 3,3′-dithiobis(succinimidylpropionate),bifunctional maleimides such as bis-N-maleimido-I,8-octane. Othermodifications include deamidation of glutaminyl and asparaginyl residuesto the corresponding glutamyl and aspartyl residues, respectively,hydroxylation of praline and lysine, phosphorylation of hydroxyl groupsof seryl or threonyl residues, methylation of the amino groups oflysine, arginine, and histidine side chains (T. E. Creighton, Proteins:Structure and Molecular Properties, W. H. Freeman & Co., San Francisco,pp. 79-86 (1983)), acetylation of the N-terminal amine, and amidation ofany C-terminal carboxyl group. Such derivatization may improve thesolubility, absorption, transport across the blood brain barrier, serumhalf-life, and the like. Modifications of designer BMPs mayalternatively eliminate or attenuate any possible undesirable sideeffect of the protein. Moieties capable of mediating such effects aredisclosed, for example, in Remington's Pharmaceutical Sciences, 16thed., Mack Publishing Co., Easton, Pa. (1980).

Another type of covalent modification of designer BMPs comprises linkingthe protein to one of a variety of nonproteinaceous polymers, e.g.,polyethylene glycol (“PEG”), polypropylene glycol, or polyoxyalkylenes,in the manner set forth in U.S. Pat. Nos. 4,640,835; 4,496,689;4,301,144; 4,670,417; 4,791,192 or 4,179,337. A variety of couplingchemistries may be used to achieve PEG attachment, as is well known inthe art.

In another embodiment, the designer BMP comprises linking the proteinvia a CovX-body linker to a CovX-body antibody such as, but not limitedto, the CovX-bodies described in U.S. Pat. No. 5,733,757, and US PatentPublication No. US 2009/0098130. Such CovX-bodies may exhibit improvedcharacteristics, including, but not limited to, improved stability andextended serum half-life.

Methods of Assaying Receptor Binding Activity of Designer BMPs

The receptor binding activity of designer BMPs may be assessed using anymethods used for assessing the activity of wild type BMPs.

The affinity of designer BMPs for one or more BMP receptors can bedetermined by receptor binding assays. For example, affinities forALK-2, ALK-3, ALK-6, ActRII, ActRIIb, or BMPRII can be determined.Suitable binding assays include, but are not limited to ELISA,fluorescence anisotropy and intensity, scintillation proximity assays(SPA), Biacore (Pearce et al., Biochemistry 38:81-89 (1999)), DELFIAassays, and AlphaScreen™ (commercially available from PerkinElmer; BosseR., Illy C, and Chelsky D (2002)).

In some embodiments, Biacore or surface plasmon resonance assays areused. See, for example, McDonnell, Curr. Opin. Chem. Biol. 5:572-577(2001). Biacore experiments have been used previously to characterizebinding of TGF-β isoforms to their receptors (De Crescenzo et al., J.Biol. Chem., 276: 29632-29643 (2001); De Crescenzo et al., J. Mol. Biol.328: 1173-1183) (2003).

In other embodiments, a plate-based Direct Binding Assay is used todetermine the affinity of one or more modified BMPs for one or more BMPreceptors. This method is a modified sandwich ELISA in which BMP iscaptured using an anti-BMP monoclonal antibody and then detected using aBMP receptor-Fc fusion protein.

In other embodiments, AlphaScreen™ assays (Bosse R. et al., Principlesof AlphaScreen™ PerkinElmer Literature Application Note Ref #4069,(2002)) can be used to characterize receptor and inhibitor binding.Fluorescence assays may also be used to characterize receptor andinhibitor binding. For example, either BMP2 or a BMP2 receptor orinhibitor may be labeled with a fluorescent dye (for examples ofsuitable dyes, see the Molecular Probes catalog). Additionally,scintillation proximity assays (SPA) can be used to determine receptorbinding affinity. For example, BMP receptor-Fc fusions may be bound toprotein A coated SPA beads or flash-plate and treated with S35-labeledBMP; the binding event results in production of light.

In a particular embodiment, the KD of a specific BMP mutant to a Type Ior Type II receptor can be determined by using receptor extracellulardomain fusions to a human IgG-Fc. The receptor can be bound to an octetsensor using anti-human-IgG-Fc sensors and the BMP can bind the receptorextra-cellular domain in solution to determine Kon and Koff rates. TheOctet systems utilize proprietary BioLayer Interferometry (BLI) toenable real-time, label-free analysis of biomolecular interactions andto provide information on affinity, kinetics and concentration. Asproteins bind the Octet sensor the light passing through the sensor hasa wavelength shift that can be measured with a spectrophotometer. Therate of the shift is measured as the analyte binds the sensor and whenit loses binding.

Methods of Assaying Osteogenic Activity of Designer BMP

The osteogenic activity of designer BMPs may be assessed using anymethods used for assessing the activity of wild type BMPs.

BMPs promote the growth and differentiation of a number of types ofcells. Differentiation may be monitored using, for example, luminescencereporters for alkaline phosphatase or calorimetric reagents such asAlcian Blue or PNPP (Asahina et al. (1996) Exp. Cell Res, 222:38-47;Inada et al. (1996) Biochem. Biophvs. Res. Commun., 222:317-322;Jortikka et al. (1998) Life ScL 62:2359-2368; Cheng et al. (2003) J.Bone Joint Surgery 95A:1544-1552).

The rat limb bud cartilage differentiation assay may also be used tomonitor activity in primary cells. In alternative embodiments, reportergene or kinase assays may be used. Since BMPs activate the JAK-STATsignal transduction pathway, a BMP responsive cell line containing aSTAT-responsive reporter such as GFP or luciferase may be used (Kusanagiet al. (2000) Mol Biol. Cell., 11:555-565). For example, BMP activity inkidney cells may be determined using cell-based assays; see for exampleWang and Hirschberg (2004) J. Biol. Chem., 279:23200-23206.

Osteogenic activity may be measured in cell based assays such asalkaline phosphatase, BRE-luciferase, or Alizarin red mineralization,all of which are described in Isaacs et al., Mol. Endocrinol.24:1469-1477 (2010).

Osteogenic activity may also be measured in vivo, via rat ectopic boneassays or mammalian bone growth models. In some embodiments, osteogenicactivity is measured in non-human primate models. These models aredescribed in Isaacs et al., Mol. Endocrinol. 24:1469-1477 (2010).

Methods for evaluating bone mass and quality are known in the art andinclude, but are not limited to X-ray diffraction; DXA; DEQCT; pQCT,chemical analysis, density fractionation, histophotometry,histomorphometry, and histochemical analysis as described, for example,in Lane et al., J. Bone Min. Res. 18:2105-2115 (2003). One assay fordetermining cortical bone density is the MicroCT assay. Following pQCTmeasurement, the microCT evaluation can be performed, for example, usinga Scanco mCT40 (Scanco Medical AG) on a femur.

Any known or later developed in vitro or in vivo method for assessingbone growth/density/strength may be used to assess the osteogenicactivity of the designer BMPs of the invention.

Pharmaceutical Compositions

Designer BMPs of the present invention may be formulated foradministration to a mammal, preferably a human in need thereof as partof a pharmaceutical composition. The composition can be administered byany suitable means, e.g., parenterally, orally or locally. Where thedesigned BMPs is to be administered locally, as by injection, to adesired tissue site, or systemically, such as by intravenous,subcutaneous, intramuscular, intraorbital, ophthalmic, intraventricular,intracranial, intracapsular, intraspinal, intracistemal,intraperitoneal, buccal, rectal, vaginal, intranasal or aerosoladministration, the composition preferably comprises an aqueoussolution. The solution preferably is physiologically acceptable, suchthat administration thereof to a mammal does not adversely affect themammal's normal electrolyte and fluid volume balance. The aqueoussolution thus can comprise, e.g., normal physiologic saline (0.9% NaCl,0.15M), pH 7-7.4.

Useful solutions for oral or parenteral systemic administration can beprepared by any of the methods well known in the pharmaceutical arts,described, for example, in “Remington's Pharmaceutical Sciences”(Gennaro, A., ed., Mack Pub., 1990, the disclosure of which isincorporated herein by reference). Formulations can include, forexample, polyalkylene glycols such as polyethylene glycol, oils ofvegetable origin, hydrogenated naphthalenes, and the like. Formulationsfor direct administration, in particular, can include glycerol and othercompositions of high viscosity.

Biocompatible, preferably bioresorbable polymers, including, forexample, hyaluronic acid, collagen, tricalcium phosphate, polybutyrate,polylactide, polyglycolide and lactide/glycolide copolymers, may beuseful excipients to control the release of the designer BMPs in vivo.Other potentially useful parenteral delivery systems for the presentdesigner BMPs can include ethylene-vinyl acetate copolymer particles,osmotic pumps, implantable infusion systems, and liposomes. Formulationsfor inhalation administration can contain as excipients, for example,lactose, or can be aqueous solutions containing, for example,polyoxyethylene-9-lauryl ether, glycocholate or deoxycholate, or oilysolutions for administration in the form of nasal drops or as a gel tobe applied intranasally.

Alternatively, the designer BMPs of the invention, including designerBMP2 and BMP6, identified as described herein may be administeredorally. For example, liquid formulations of designer BMPs can beprepared according to standard practices such as those described in“Remington's Pharmaceutical Sciences” (supra). Such liquid formulationscan then be added to a beverage or another food supplement foradministration. Oral administration can also be achieved using aerosolsof these liquid formulations. Alternatively, solid formulations preparedusing art-recognized emulsifiers can be fabricated into tablets,capsules or lozenges suitable for oral administration.

Optionally, the designer BMPs can be formulated in compositionscomprising means for enhancing uptake of the protein by a desiredtissue. For example, tetracycline and diphosphonates (bisphosphonates)are known to bind to bone mineral, particularly at zones of boneremodeling, when they are provided systemically in a mammal.Accordingly, such components can be used to enhance delivery of thepresent designer BMPs to bone tissue. Alternatively, an antibody orportion thereof that binds specifically to an accessible substancespecifically associated with the desired target tissue, such as a cellsurface antigen, also can be used. If desired, such specific targetingmolecules can be covalently bound to the present designer BMP, e.g., bychemical crosslinking or by using standard genetic engineeringtechniques to create, for example, an acid labile bond such as anAsp-Pro linkage. Useful targeting molecules can be designed, forexample, according to the teachings of U.S. Pat. No. 5,091,513.

It is contemplated also that some of the designer BMPs may exhibit thehighest levels of activity in vivo when combined with carrier matrices,i.e., insoluble polymer matrices. See for example, U.S. Pat. No.5,266,683 the disclosure of which is incorporated by reference herein.Currently preferred carrier matrices are xenogenic, allogenic orautogenic in nature. It is contemplated, however, that syntheticmaterials comprising polylactic acid, polyglycolic acid, polybutyricacid, derivatives and copolymers thereof may also be used to generatesuitable carrier matrices. Preferred synthetic and naturally derivedmatrix materials, their preparation, methods for formulating them withthe designer BMPs of the invention, and methods of administration arewell known in the art and so are not discussed in detailed herein. Seefor example, U.S. Pat. No. 5,266,683.

In certain embodiments, the designer BMPs can be administered to themammal in need thereof either alone or in combination with anothersubstance known to have a beneficial effect on tissue morphogenesis.Examples of such substances (herein, cofactors) include substances thatpromote tissue repair and regeneration and/or inhibit inflammation orfibrosis. Examples of useful cofactors for stimulating bone tissuegrowth in osteoporotic individuals, for example, include but are notlimited to, vitamin D3, calcitonin, prostaglandins, parathyroid hormone,dexamethasone, estrogen and IGF-I or IGF-II. Useful cofactors for nervetissue repair and regeneration can include nerve growth factors. Otheruseful cofactors include symptom-alleviating cofactors, includingantiseptics, antibiotics, antiviral and antifungal agents, analgesicsand anesthetics.

Designer BMPs are preferably formulated into pharmaceutical compositionsby admixture with pharmaceutically acceptable, nontoxic excipients andcarriers. As noted above, such compositions can be prepared forsystemic, e.g., parenteral, administration, particularly in the form ofliquid solutions or suspensions; for oral administration, particularlyin the form of tablets or capsules; or intranasally, particularly in theform of powders, nasal drops or aerosols. Where adhesion to a tissuesurface is desired, the composition can comprise a fibrinogen-thrombindispersant or other bioadhesive such as is disclosed, for example, inPCT US91/09275, the disclosure of which is incorporated herein byreference. The composition then can be painted, sprayed or otherwiseapplied to the desired tissue surface.

When administered, the pharmaceutical composition of this invention istypically delivered in a pyrogen-free, physiologically acceptable form.Further, the composition may desirably be encapsulated or injected in aviscous form for delivery to the site of bone cartilage or tissuedamage. Local administration may be suitable for wound healing andtissue repair. Preferably for bone and/or cartilage formation, thecomposition includes a matrix capable of delivering BMP protein to thesite of bone and/or cartilage damage, providing a structure for thedeveloping bone and cartilage and optimally capable of being resorbedinto the body. Such matrices may be formed of materials presently in usefor other implanted medical applications.

The choice of matrix material is based on biocompatibility,biodegradability, mechanical properties, cosmetic appearance andinterface properties. The particular application of the designer BMPcompositions will define the appropriate formulation. Potential matricesfor the compositions may be biodegradable and chemically defined calciumsulfate, tricalciumphosphate, hydroxyapatite, polylactic acid andpolyanhydrides. Other potential materials are biodegradable andbiologically well defined, such as bone or dermal collagen. Furthermatrices are comprised of pure proteins or extracellular matrixcomponents. Other potential matrices are nonbiodegradable and chemicallydefined, such as sintered hydroxyapatite, bioglass, aluminates, or otherceramics. Matrices may be comprised of combinations of any of theabove-mentioned types of material, such as polylactic acid andhydroxyapatite or collagen and tricalciumphosphate. The bioceramics maybe altered in composition, such as in calcium-aluminate-phosphate andprocessing to alter pore size, particle size, particle shape, andbiodegradability.

The dosage regimen will be determined by the attending physicianconsidering various factors which modify the action of the designer BMPprotein. These factors include, without limitation, the amount of boneweight desired to be formed, the site of bone damage, the condition ofthe damaged bone, the size of a wound, type of damaged tissue, thepatient's age, sex, and diet, the severity of any infection, time ofadministration and other clinical factors. The dosage may vary with thetype of matrix used in the reconstitution. The addition of other knowngrowth factors, such as IGF I (insulin like growth factor I), to thefinal composition, may also effect the dosage. Progress can be monitoredby periodic assessment of bone growth and/or repair. One method ofassessing bone growth or repair is by x-ray imaging and/or CT scanning,among many art-recognized methods.

The compositions can be formulated for parenteral or oral administrationto humans or other mammals in therapeutically effective amounts, e.g.,amounts which provide appropriate concentrations of the designer BMPs totarget tissue for a time sufficient to induce the desired effect.Preferably, the present compositions alleviate or mitigate the mammal'sneed for a morphogen-associated biological response, such as maintenanceof tissue-specific function or restoration of tissue-specific phenotypeto senescent tissues (e.g., osteopenic bone tissue) or the inhibition orreversal of a fibrotic response in a tissue.

As will be appreciated by those skilled in the art, the concentration ofthe compounds described in a therapeutic composition will vary dependingupon a number of factors, including the dosage of the drug to beadministered, the chemical characteristics (e.g., hydrophobicity) of thecompounds employed, and the route of administration. The preferreddosage of drug to be administered also is likely to depend on suchvariables as the type and extent of a disease, tissue loss or defect,the overall health status of the particular patient, the relativebiological efficacy of the compound selected, the formulation of thecompound, the presence and types of excipients in the formulation, andthe route of administration.

In general terms, the compounds of this invention may be provided in anaqueous physiological buffer solution containing about 0.1 to 10% w/vcompound for parenteral administration. Typical doses ranges are fromabout 10 ng/kg to about 1 g/kg of body weight per day; with a preferreddose range being from about 0.1 mg/kg to 100 mg/kg of body weight.

Therapeutic Uses

Designer BMPs may be used for any indication that wild type BMPs areuseful for or for any method in which a TGFβ superfamily member can beused. Designer BMPs are capable of inducing the developmental cascade ofbone and cartilage morphogenesis and to induce or mediate Smad signalingpathways. Designer BMPs induce greater bone augmentation and repair,including, but not limited to, production of greater bone mass, bonestiffness and bone density that corresponding wild type BMP.Accordingly, designer BMPs may be used to induce bone formation in atissue. Also, designer BMPs may be used to induce proliferation of boneand cartilage in a variety of locations in the body. For example,designer BMPs may be used to repair joints such as knee, elbow, ankle,and finger. For example, designer BMPs may be useful for regeneratingcartilage in patients suffering from arthritis or other cartilagedegenerating diseases. Further, designer BMPs are indicated for treatingtears in cartilage due to injury. In addition, designer BMPs are usefulfor inducing bone growth in patients. For example, designer BMPs areindicated for use in treating patients suffering from bone fractures orbreaks, osteoporosis, or patients in need of spinal fusion or for repairof the spine, vertebrae or the like.

In another embodiment, the invention includes a method of boneaugmentation and/or repair. Thus, the invention encompassesadministering a therapeutically effective amount of a designer BMP to asite where it mediates detectable bone augmentation or repair.

In another embodiment, the invention includes a method of inducing orincreasing Smad expression. The method comprises contacting a cellcomprising Smad mediated expression pathway with a designer BMP of theinvention.

Designer BMPs are capable of inducing the developmental cascade of bonemorphogenesis and tissue morphogenesis for a variety of tissues inmammals different from bone or bone cartilage. This morphogenic activityincludes the ability to induce proliferation and differentiation ofprogenitor cells, and the ability to support and maintain thedifferentiated phenotype through the progression of events that resultsin the formation of bone, cartilage, non-mineralized skeletal orconnective tissues, and other adult tissues.

For example, designer BMPs may be used for treatment to prevent loss ofand/or increase bone mass in metabolic bone diseases. General methodsfor treatment to prevent loss of and/or increase bone mass in metabolicbone diseases using osteogenic proteins are disclosed in U.S. Pat. No.5,674,844, the disclosures of which are hereby incorporated byreference. Designer BMPs may also be administered to replace or repairbone or cartilage at injury sites such as bone breaks, bone fractures,and cartilage tears. Designer BMPs of the present invention may be usedfor periodontal tissue regeneration. General methods for periodontaltissue regeneration using osteogenic proteins are disclosed in U.S. Pat.No. 5,733,878, the disclosures of which are hereby incorporated byreference.

Designer BMPs may be used for liver regeneration. General methods forliver regeneration using osteogenic proteins are disclosed in U.S. Pat.No. 5,849,686, the disclosures of which are hereby incorporated byreference. Designer BMPs may be used for treatment of chronic renalfailure. General methods for treatment of chronic renal failure usingosteogenic proteins are disclosed in U.S. Pat. No. 6,861,404, thedisclosures of which are hereby incorporated by reference. Designer BMPsmay be used for enhancing functional recovery following central nervoussystem ischemia or trauma. General methods for enhancing functionalrecovery following central nervous system ischemia or trauma usingosteogenic proteins are disclosed in U.S. Pat. No. 6,407,060, thedisclosures of which are hereby incorporated by reference.

Designer BMPs may be used for inducing dendritic growth. General methodsfor inducing dendritic growth using osteogenic proteins are disclosed inU.S. Pat. No. 6,949,505, the disclosures of which are herebyincorporated by reference.

Designer BMPs may be used for inducing neural cell adhesion. Generalmethods for inducing neural cell adhesion using osteogenic proteins aredisclosed in U.S. Pat. No. 6,800,603, the disclosures of which arehereby incorporated by reference.

Designer BMPs may be used for treatment and prevention of Parkinson'sdisease. General methods for treatment and prevention of Parkinson'sdisease using osteogenic proteins are disclosed in U.S. Pat. No.6,506,729, the disclosures of which are hereby incorporated byreference.

It is within skills of an ordinary artisan to modify the general methodsusing the modified BMPs of the present invention for various therapeuticuses described above. Exemplary embodiments of therapeutic applicationsof the modified BMPs of the present invention are further describedbelow.

Designer BMPs may be used to repair diseased or damaged mammaliantissue. The tissue to be repaired is preferably assessed, and excessnecrotic or interfering scar tissue removed as needed, by surgical,chemical, ablating or other methods known in the medical arts. Thedesigner BMPs then may be provided directly to the tissue locus as partof a sterile, biocompatible composition, either by surgical implantationor injection. Alternatively, a sterile, biocompatible compositioncontaining modified BMP-stimulated progenitor cells may be provided tothe tissue locus. The existing tissue at the locus, whether diseased ordamaged, provides the appropriate matrix to allow the proliferation andtissue-specific differentiation of progenitor cells. In addition, adamaged or diseased tissue locus, particularly one that has been furtherassaulted by surgical means, provides a morphogenically permissiveenvironment. For some tissues, it is envisioned that systemic provisionof the modified BMPs will be sufficient.

Designer BMPs may be used to prevent or substantially inhibit scartissue formation following an injury. If a designer BMP is provided to anewly injured tissue locus, it can induce tissue morphogenesis at thelocus, preventing the aggregation of migrating fibroblasts intonon-differentiated connective tissue. The designer BMP preferably isprovided as a sterile pharmaceutical preparation injected into thetissue locus within five hours of the injury.

For example, the designer BMPs may be used for protein-inducedmorphogenesis of substantially injured liver tissue following a partialhepatectomy. Variations on this general protocol may be used for othertissues. The general method involves excising an essentiallynonregenerating portion of a tissue and providing the modified BMP,preferably as a soluble pharmaceutical preparation to the excised tissuelocus, closing the wound and examining the site at a future date. Likebone, liver has a potential to regenerate upon injury during post-fetallife.

As another example, designer BMPs can also be used to inducedentinogenesis. To date, the unpredictable response of dental pulptissue to injury is a basic clinical problem in dentistry. Usingstandard dental surgical procedures, small areas (e.g., 2 mm) of dentalpulps can be surgically exposed by removing the enamel and dentinimmediately above the pulp (by drilling) of sample teeth, performing apartial amputation of the coronal pulp tissue, inducing hemostasis,application of the pulp treatment, and sealing and filling the cavity bystandard procedures.

The designer BMPs of the invention may be used to treat fibrosis. Thefibrosis may be located in various parts of the body and can be of aparticular kind, for example, the fibrosis may be located: in thekidney, for example, fibrosis as observed in glomerulonenephritis,diabetic nephropathy, allograft rejection, and HIV nephropathy; in theliver, for example, cirrhosis, and veno-occlusive disease; in the lung,for example, idiopathic fibrosis (and autoimmune fibrosis); in the skin,for example, systemic sclerosis, keloids, scars, andeosinophilia-myalgia syndrome; in the central nervous system, forexample, intraocular fibrosis; in the cardiovascular system, forexample, vascular restenosis; in the nose, for example, nasal polyposis;in bone or bone marrow; in an endocrine organ; and in thegastrointestinal system.

In one embodiment, a designer BMP having the binding characteristics ofBMP7, or useful modification thereof (extended half life, increasebinding affinity for a same or different receptor compared with wildtype BMP7, resistance to inhibition by a BMP7 antagonist, such as, butnot limited to, Noggin, and the like) may be useful to treat, ameliorateor reverse fibrosis. That is, as reviewed recently in Weiskirchen etal., 2009, Frontiers in Biosci. 14:4992-5012, TGFβ₁ mediates a cascadeleading to increased fibrosis, including, but not limited to,epithelial-to-mesenchymal transition. The fibrosis-inducing effects ofTGFβ₁ may be inhibited or reversed by BMP7. See also Loureiro et al.,2010, Nephrol. Dial. Transplant. 25:1098-1108. Further, certain friboticconditions may also be treated or ameliorated by administration of BMP4(see Pegorier et al., 2010, Resp. Res. 11:85). Therefore, the inventionencompasses a designer BMP either based on a BMP7 framework and/orincorporating the type I and type II mutations disclosed elsewhereherein, to alter receptor binding and provide a potential usefultherapeutic for treatment of fibrosis in a patient in need thereof.

A fibrotic disorder may be induced by a number of causes including:chemotherapy, for example, pulmonary fibrosis resulting from bleomycin,chlorambucil, cyclophsphamide, methotrexate, mustine, or procarbazinetreatment; radiation exposure whether accidental or purposeful as inradiation therapy, for example, interstitial lung disease (ILD)resulting from radiation; environmental or industrial factors orpollutants such as chemicals, fumes, metals, vapors, gases, etc., forexample, ILD resulting from asbestos or coal dust; a drug or acombination of drugs, for example, antibiotics (e.g. penicillins,sulfonamides, etc.), cardiovascular drugs (e.g., hydralazine, betablockers, etc.), CNS drugs (phenytoin, chlorpromazine, etc.)anti-inflammatory drugs (e.g., gold salts, phenylbutazone, etc.), etc.can cause ILD; an immune reaction disorder, for example, chronicgraft-versus-host disease with dermal fibrosis; disease states such asaspiration pneumonia which is a known cause of ILD, and parasite inducedfibrosis; and wounds, for example, blunt trauma, surgical incisions,battlefield wounds, etc., as in penetrating injuries of the CNS.

In a particular embodiment, designer BMPs with improved binding to typeI receptor ALK2, such as BMPE, may be used to treat diseases related toALK2.

Kits

The invention includes various kits which comprise a therapeuticallyeffective amount of a designer BMP of the invention, along with anapplicator and instructional materials which describe use of thedesigner BMP to perform the methods of the invention. Although exemplarykits are described below, the contents of other useful kits will beapparent to the skilled artisan in light of the present disclosure. Eachof these kits is included within the invention.

The invention includes a kit for treatment to prevent loss of and/orincrease bone mass in a metabolic bone disease in a patient in needthereof. The kit includes a designer BMP of the invention. The kitfurther comprises an applicator, including, but not limited to, asyringe, a bone cement mixing device, and the like, for administrationof the components of the kit to a patient. Further, the kit comprises aninstructional material setting forth the pertinent information for theuse of the kit to treat or prevent bone mass and/or increase bone massin the patient.

More preferably, the kit comprises at least one designer BMP selectedfrom an antibody having an amino acid sequence selected from the aminoacid sequence of SEQ ID NOs:8-73, even more preferably, the designer BMPcomprises the amino acid sequence of SEQ ID NO:12, SEQ ID NO:14, SEQ IDNO:36 and SEQ ID NO:37. Preferably, the designer BMP is BMPE, BMPG,BMPGE and BMPGER.

The kit can comprise any number of additional therapeutic agents fortreatment to prevent bone loss and/or increase bone mass. Such agentsare set forth previously and include therapeutic compounds, cytokines,vitamins, other members of the TGFβ superfamily, among many others.

The invention also relates to an article of manufacture (e.g., dosageform adapted for i.v. or oral administration) comprising a designer BMPin the amount effective to prevent bone loss and/or increase bone mass(e.g., more than 10 mg/kg, at least 15 mg/kg, or 15 mg/kg). In certainembodiments, the article of manufacture comprises a container orcontainers comprising a designer BMP and a label and/or instructions foruse to treat or prevent bone loss and/or increase bone mass.

The invention also includes a kit to treat or prevent fibrosis in atissue or organ in a patient in need thereof. The kit includes adesigner BMP of the invention. The kit further comprises an applicator,including, but not limited to, a syringe or device for delivering theprotein, a mixing device, and the like, for administration of thecomponents of the kit to a patient. Further, the kit comprises aninstructional material setting forth the pertinent information for theuse of the kit to treat or prevent fibrosis in the patient.

More preferably, the kit comprises at least one designer BMP selectedfrom a protein having an amino acid sequence selected from the aminoacid sequence of SEQ ID NOs:8-73, even more preferably, the designer BMPcomprises the amino acid sequence of SEQ ID NO:12, SEQ ID NO:14, SEQ IDNO:36 and SEQ ID NO:37. Preferably, the designer BMP is BMPE, BMPG,BMPGE or BMPGER.

The kit can comprise any number of additional therapeutic agents fortreatment to prevent bone loss and/or increase bone mass or treat orprevent fibrosis. Such agents are set forth previously and includetherapeutic compounds, cytokines, vitamins, other members of the TGFβsuperfamily, among many others.

The invention also relates to an article of manufacture (e.g., dosageform adapted for i.v. or oral administration) comprising a designer BMPin the amount effective to prevent bone loss and/or increase bone massor to treat or prevent fibrosis (e.g., more than 1 mg/kg, at least 10mg/kg, at least 15 mg/kg, or 15 mg/kg). In certain embodiments, thearticle of manufacture comprises a container or containers comprising adesigner BMP and a label and/or instructions for use to treat or preventbone loss and/or increase bone mass or to treat or prevent fibrosis.

The invention is further described in detail by reference to thefollowing experimental examples. These examples are provided forpurposes of illustration only, and are not intended to be limitingunless otherwise specified. Thus, the invention should in no way beconstrued as being limited to the following examples, but rather, shouldbe construed to encompass any and all variations which become evident asa result of the teaching provided herein.

EXAMPLES Example 1 Production and Purification of Designer BMP Proteins

Production Using Mammalian Cell Culture

Recombinant host CHO cells producing and secreting wild type anddesigner BMPs were generated using standard recombinant DNA procedures.Conditioned medium was generated from adherent cell cultures. Briefly,CHO cells were seeded in medium containing 10% dFBS and allowed to growto near confluence for 3-4 days. After this growth phase, growth mediumwas discarded and the cells were rinsed once with PBS-CMF andsubsequently switched to a serum-free medium supplemented with 200 ug/mldextran sulfate, 2 mM sodium butyrate, and 10 mM HEPES. Cells were thencultured for 7 days at a temperature of 31° C. Conditioned medium washarvested and clarified by using sterilizing 0.2 uM filtration.Conditioned medium was stored at −20° C. until purification.

Purification of Designer BMPs

In order to purify the novel designer BMP molecules from CHO cellconditioned media the BMPs were captured by two steps of conventionalchromatography and the results are shown in FIG. 5, comprising panelsA-D. Only the details of the purification of BMPE are shown herein sinceall of the other novel designer BMPs were purified in an essentiallysimilar manner.

CHO conditioned medium (CHO CM) (pH adjusted to 8.0 with 1.0 M Tris, pH8.0) was loaded onto a Cellufine Sulfate column (65 ml, 2.6×12.3 cm)that was equilibrated with 20 mM MES pH 8.0. The column was washed with10 column volumes (CV) of 20 mM Tris, pH 8.0, 10 CV 50 mM MES pH 5.6 and10 CV of Buffer A (6.0 M Urea, 50 mM MES, pH 5.6). The BMPs were elutedwith a linear 0-1.0 M NaCl gradient over 5 CV (Buffer B=6.0 M Urea, 50mM MES, 1.0 M NaCl, pH 5.6). Upon application of a sodium chloridegradient, a broad peak between conductivities of 30 and 45 mS/cmcharacteristic of BMP2 was observed (FIG. 5A). Fractions were analyzedby Coomassie stained SDS-PAGE gels and BMP containing fractions werepooled. BMPs in fractions were identified as reducible dimers onSDS-PAGE Non-Reduced gels (left panel of FIG. 5B). The BMP pools fromthe Cellufine Sulfate chromatography step were further purified bypreparative Reverse Phase HPLC on a 10×250 mm Vydac 15 μm C8 Column(Solvent A=0.1% TFA, Solvent B=90% acetonitrile, 0.1% TFA), with BMPeluting with approximately 32% acetonitrile. A tracing of the ReversedPhase chromatography step is shown in FIG. 5C. The protein wasconcentrated and acetonitrile was removed using a speedvac and theconcentrate was formulated into MFR-169 buffer via dialysis. Thepurified BMPs were characterized by SDS-PAGE, A280 and LAL Assay(endotoxins). A photograph of an Non-Reduced SDS-PAGE gel (left side ofFIG. 5D) and a Reduced SDS-PAGE gel (right side of FIG. 5D) showing thesame gel fractions (F13 through F18) is shown. A total of 16 BMPdesigner proteins were purified to essentially the same levels of purityand expression/purification yields ranging from 0.3-1.4 mg/L CM and theresults are shown in FIG. 6 showing photographs (FIG. 6). Briefly, wildtype BMP2 (WT) and designer BMPs BMPSE, BMPE, E109R, BMPD, BMP S85R, BMPSNE, BMPB, and BMP-EN are shown in photographs of a non-reduced gel(FIG. 6A) and a reduced SDS-PAGE (FIG. 6B), and designer BMPs ai(variant of BMPA), aii (variant of BMPA), c (BMPC), hi (variant ofBMPI), hii, i, f, and g are shown in photographs of a non-reducedSDS-PAGE (FIG. 6C) and reduced SDS-PAGE (FIG. 6D).

Example 2 Osteogenic Activity of Designer BMPs Demonstrated Using InVitro and In Vivo Assays Alkaline Phosphatase Assay

Approximately 8000 C2C12 cells/well in a 96-well plate were treated withthe indicated BMP ant the dose indicated. Twenty-four hourspost-treatment, the plates were processed to measure alkalinephosphatase which is an art-recognized assay for osteogenic activity.The culture medium was removed, and the plates were washed twice withcalcium/magnesium-free PBS. 50 μl of 4-Methylumbelliferyl phosphate(4-MUP Liquid Alkaline Phosphatase Substrate; Sigma cat. # M3168) wasadded to each well, and the plates were incubated in the dark at 37° C.for 15 minutes. Fluorescence was measured on a Victor luminometer(settings: excitation at 355 nM; emission at 460 nM; CW lamp energy at1120), 1 second per well. After the reading was complete, 50 μl of 2×protein assay lysis buffer (200 mM Tris-HCl, pH 9.8/0.4% Triton X-100)was added to each well and the protein concentration was determinedusing the BCA Protein assay (Pierce) following the manufacturer'smicroplate procedure. The alkaline phosphatase measurements were thennormalized to the total protein concentration (i.e., fluorometric unitsper microgram of protein). As shown by the graph in FIG. 7, C2C12 musclepre-myoblast cells treated with multiple designer BMP molecules showedsignificantly increased Alkaline Phosphatase activity, as a marker ofosteoblast differentiation, compared to treatment with wild type BMP2(heavy line with small circles). Designer BMPs exhibiting increased APactivity compared with WT BMP2 included designers BMPA, BMPF, BMPG, andBMPE. Surprisingly, designer BMPE demonstrated equivalent activity tothat of the wild type BMP2/6 heterodimer (heavy line with squares),which is known to bind both the type I receptors of BMP2 and type IIreceptors of BMP6 with high affinity. Designer BMPE is the result ofintroduction of the low affinity type I binding region of BMP6 intoBMP2. The extremely high activity of the designer BMPE molecule wasextremely surprising since it was predicted that BMPE would have lowaffinity binding to both type I and type II receptors. Interestingly,the other designer BMP molecules, designer BMPA, designer BMPF, anddesigner BMPG, have regions of wild type BMP6 that bind the type II(high affinity) receptors of BMP6 which have been introduced into BMP2(see FIG. 1B), and these designer BMPs showed increased activitycompared to BMP2, but not as high as that of wild type BMP2/6heterodimer (FIG. 7).

BRE-Luciferase Assay

C2C12 cells stably expressing the BMP-response-element luciferasereporter (element is from the Id1 promoter) were plated at 8000cells/well of a 96 well and treated with the indicated BMP and dose. 48hours post treatment, the cells were lysed and luciferase activity wasread using the Promega Dual-Glo assay kit.

The data disclosed herein demonstrated that not only was the activity ofBMPE equivalent to that of BMP-2/6 in an alkaline phosphatase assay, itwas also equivalent in a BRE-luciferase assay in C2C12 cells as shown inFIG. 8. Further, BMPE demonstrated approximately 10-20 fold greateractivity in the BRE-luciferase assay compared with wild type BMP-2 (FIG.8). Thus, the results observed in the BRE-luciferase (BRE-luc) assaycorrelated strongly with those obtained in the Alkaline Phosphatase(Alk-phos) activity assay in this same cell type (compare FIG. 7 andFIG. 8). Results from both the Alk-phos and BRE-luc assays are alsoshown in Table 10 for wild type BMP2 and the indicated designer BMPs.

Without wishing to be bound by any particular theory, these data suggestthat the addition of ALK-2 as a high affinity receptor for BMPE could bethe reason for its increased osteogenic activity. This is because anALK-2 mutation has been found to cause fibrodysplasia ossificansprogressiva (FOP), a disease where young children develop inappropriateectopic bone formation. Thus, mutation of ALK-2 binding is associatedwith increased osteogenesis and may be correlated to the increasedosteogenic activity of BMPE. Thus, BMPE is a new class of BMP moleculewith high affinity for the type I receptors ALK-2, 3, and 6.

Alizarin Red Staining for Cell Mineralization

C2C12 cells were plated in 6-well tissue culture plates at a density of4×10⁴ cells/cm² and incubated overnight at 37° C. inside a 5% CO₂/95%humidified air incubator. After the recovery period, the culture mediumwas replaced with freshly prepared osteogenic differentiation medium:Growth Medium containing 50 ug/ml L-ascorbic acid phosphate (L-AscorbicAcid Phosphate Magnesium Salt n-Hydrate; WAKO Pure Chemical Industries;Cat. No. 013-12061); 3-glycerol phosphate (β-Glycerol phosphate Disodiumsalt, 10 mM Pentahydrate; Fluka BioChemica Cat. No. 50020); and 100 nMMenadione sodium bisulfite (Vitamin K3; Sigma Cat. No. M2518). Theindicated BMP was added to the appropriate wells at the desiredconcentration. The plates were incubated at 37° C. for approximately 15days, with medium replacement every 2 to 3 days. The cells were stainedwith the Alizarin Red stain following the standard published protocols.

As shown in Table 9, below, designer BMPE induced mineralization ofC3H10T-1/2 mouse mesenchymal stem cells to a far greater extent thancorresponding wild type BMP2 as indicated by alizarin red staining. Thatis, as more fully discussed below, at doses where wild type BMP-2 wasunable to induce mineralization of the C3H10T-1/2 cells (5, 25, 50, and100 ng/ml) BMPE homodimer induced strong mineralization similar to thatof the BMP-2/6 heterodimer all as shown in Table 9. Thus, the alizarinred staining assay results further correlate the results obtained in theAlk-phos and BRE-luc assays as disclosed previously herein.

TABLE 9 Treatment BMP2 BMP2/6 BMPE  5 ng/ml − − − 25 ng/ml − ++ + 50ng/ml − ++++ ++ 100 ng/ml  − ++++ +++

Rat Intramuscular Ectopic Bone Assay

To determine whether the stronger osteogenic activity observed in vitroby the designer BMPs corresponded to similar increased activity in vivo,rat ectopic bone formation assays were performed. Briefly, an ACS(absorbable collagen sponge) impregnated with the indicated total amountof designer BMP in 160 microliters of buffer was implanted into thehamstring of 8 week old male Long Evans rats. More specifically, three 8mm biopsy punched ACS discs were sutured together with non-resorbablesilk sutures. The sponges were wetted with 160 microliters of the BMPsolution containing the amount of BMP indicated in the chart in FIG. 9(i.e., 0.1 μg or 0.5 μg). The wetted sponges were equilibrated at roomtemperature for 20 minutes. The sponges were then surgically placed intothe hamstrings of each rat bilaterally. Each BMP (wild type and designermolecules) was placed into both limbs of 4 rats. Two weeks postimplantation, the animals were sacrificed and the hamstrings weredissected, placed in 10% formalin and scanned by μCT (Scanco Inc.) todetermine the amount of ectopic bone present. The amount ofhydroxyapatite in milligrams (mg HA) present in the limbs of the treatedanimals is shown in FIG. 9. FIG. 9A shows the results for BMP2, BMPE andBMP2/6 heterodimer. FIG. 9B shows the results for BMP2, BMPG, BMPA, andBMPF. For each of the designer BMPs, ectopic bone was formed at doses atwhich wild type BMP2 was unable to form a detectable bone mass. In ahead-to-head comparison of wild type BMP2 with designer BMPE was able toinduce ectopic bone to the same extent as wild type BMP2/6 heterodimer,closely matching the results obtained in the in vitro experimentsdisclosed previously. Designer BMPs BMPG, BMPA, and BMPF alsodemonstrated significantly higher ectopic bone formation compared towild type BMP2 (FIG. 9B). Results from this assay are shown in FIG. 9and also presented in Table 10.

TABLE 10 Name Alk-phos BRE-luc Rat ectopic bone formation BMP2WT ++ ++++ BMPA ++++ ++++ ++++ BMPB ++ ++ ++ BMPC ++ ++ ++ BMPD ++ ++ ++ BMPE++++++ ++++++ ++++++ BMPF ++++ ++++ ++++ BMPG +++++ +++++ +++++ BMPH ++++ ++ BMPI +++ +++ +++ BMPJ + + + BMPD-P ++ ++ ++ BMP6-short ++++ ++++++++

Example 3 BMP Receptor Binding

To further elucidate the mechanism of increased osteogenic activity ofthe designer BMPs, binding kinetic analysis of each of the designer BMPswith a panel of BMP receptors was performed using the Octet system(ForteBio, Menlo Park, Calif.). The Octet QK analysis was performed atdegrees in TBS with 0.1% Tween-20. Samples were agitated at 1000 rpm.Anti-Human IgG Octet tips were saturated with 10 ug/mL of eachreceptor-human-IgG1-Fc fusion protein for 20 min, which typicallyresulted in capture levels of the receptor that are saturated within arow of eight tips. Each BMP was prepared as a sevenfold serial dilution(typically 200-3 nM in singlicate) plus buffer blanks. Each Receptor/BMPbinding pair was run at least in duplicate. Association was monitoredfor 10 min and dissociation was followed for 30 into buffer alone.Kinetic parameters (kon and koff) and affinities (KD) were calculatedusing the Octet Data Analysis software 6.0 using a partial binding 1:1model following manufacturer's instructions.

The data set forth in Table 12 show that wild type BMP2 and BMP6proteins each demonstrated the expected high affinity binding to type I(ALK-3 and ALK-6) and type II receptors (ActRIIA, ActRIIB, and BMPRII),respectively. The wild type BMP2/6 heterodimer exhibited high affinitybinding to both groups of type I and type II receptors, as did designerBMPG, which the type II binding domains A and B of BMP2 have beenreplaced by the domains of wild type BMP6. Designer BMPE showed similaraffinity as wild type BMP2 for the type II receptors as expected sinceno mutations were made in the type II binding regions. Unexpectedly,designer BMPE maintained high affinity binding for the type I receptorsALK-3 and ALK-6 with the type I binding domain of BMP6 which has beensubstituted in place for that of BMP2, while also unexpectedly bindingthe type I receptor ALK-2 with a KD of 2 nm. Thus, BMPE surprisinglygained a very high affinity binding for ALK-2 not observed in either WTBMP2 or WT BMP6.

TABLE 12 BMP-2 BMP-6 BMP-2/6 Receptor (nM) (nM) (nM) BMPE BMPGALK2 >1000 >1000 250 2 <1000 ALK3 1 11 2 3 1 ALK6 1 20 0.5 1 1 ACTR IIA53 3 2.5 40 2 ACTR IIB 8 0.5 1 6 0.5 BMPR 62 4 3 82 4 IIA

As shown in Table 13, combining the mutations of BMPG and BMPE,comprising either proline or arginine at amino acid residue 36 (P36R)relative to the amino acid sequence of wild type BMP2 as set forth inSEQ ID NO:1, to produce BMP-GEP (also referred to as BMPGE P36) andBMP-GER (also referred to as BMPGE P36R), respectively, produceddesigner BMPs which demonstrated high affinity, low nM KDs, for all typeI and Type II BMP receptors including ALK-2.

TABLE 13 BMP- BMP- Receptor BMP-2 BMP-6 2/6 BMP-E BMP-G GER ALK2 >1000700 250 2 >1000 2 ALK3 1 11 2 3 1 2 ALK6 1 20 0.5 1 1 1 ACTRIIA 53 3 2.540 2 2 ATRIIB 8 0.5 1 6 0.5 0.5 BMPRIIA 62 4 3 82 4 3.5

Thus, the data disclosed herein demonstrate novel designer BMPs, suchas, but not limited to, BMP-GER and BMP-GEP, which combine theattributes of BMP-G and BMP-E such that these novel designer BMPsdemonstrate high affinity binding to a wide repertoire of both type Iand type II receptors, including, but not limited to, ALK2, ALK3, ALK6,ActRIIA, ActRIIB and BMPRIIA. The data further demonstrated thatreplacing the proline at residue number 36 of the amino acid sequence ofWT BMP2 (SEQ ID NO:1) to arginine produced a designer BMP that was aseffective as an otherwise identical BMP where the amino acid was notreplaced. These novel osteogenic BMPs as exemplified by BMP-GER, providehigh levels of biologic activity thus allowing lower dosing and, in somecases, more rapid osteogenic response, strongly suggesting that thesemolecules would provide highly effective therapeutics.

Example 4 In Vivo Osteogenic Activity in Non-Human Primates

NHP Fibula Osteotomy Model

To further assess the potential therapeutic potential of the noveldesigner BMPs of the invention, the activity of designer BMPE and BMPGwas compared to that of wild type BMP2 in an NHP (non-human primate)fibula osteotomy model.

A mid-diaphyseal osteotomy of the fibula was performed bilaterally withthe 1-mm blade of an oscillating saw in adult male Cynomolgus monkeys(Macaca fascicularis) with a mean body weight (and standard deviation)of 7.5±0.2 kg and an age range of seven to ten years. A smallintramedullary Kirschner wire was added to the previously describedfibular osteotomy model to maintain alignment of the proximal and distalbone ends for more uniform torsional biomechanical testing. The twomajor advantages of this model are the ability to utilize a bilateralstudy design as a result of the low morbidity of the procedure and theability to remove a 6 to 8-cm segment of the fibula containing theosteotomy site for subsequent biomechanical and histological evaluationwithout having to sacrifice the animal. A 500 μL solution of 0.5 mg/mlof either wild type or designer BMP was added to a 30 mm×15 mm ACSsponge. The sponge was wrapped around the defect following surgery. Anapproximately 2 mm fracture of the fibula of each limb of a skeletallymature NHP was wrapped in an ACS sponge comprising either a designer BMPmolecule at 0.5 mg/ml dose (250 μg total delivered) or the same amountof wild type BMP2 in the contralateral limb. Thus, each animal receivedwild type BMP in one limb and a designer BMP in the contralateral limb.

In this model, designer BMPE and BMPG were chosen since each representsa different class of designer molecule; designer BMPG shows highaffinity for both type I and type II receptors while BMPE binds the typeI receptor ALK-2 with high affinity in addition to binding type Ireceptors ALK-3 and ALK-6 with high affinity. Radiographs were obtainedevery 2 weeks to compare the healing of the limbs treated with thedesigner BMP molecule compared with the healing of the contralaterallimb treated with wild type BMP2 in each animal. As shown in FIGS.10A-10C, the data, which include seven animals from each group,demonstrated that the callus formed earlier and more robustly in thelimbs treated with each designer BMP (BMPE shown in FIG. 10A and BMPGshown in FIG. 10B-10C) molecule compared to that with bone formationobserved in the limb treated with wild type BMP2.

Tables 14 and 15, below, set forth data providing quantitativeassessments of the difference in bone mass and bone volume observedbetween limbs treated with wild type BMP2 and limbs treated withdesigner BMPE. As shown in FIG. 11, BMPE administration resulted in anaverage of a 33% increase in bone volume (mm³) when compared with bonevolume increase in wild type BMP2 treated limbs. This μCT analysisincluded all the native bone where there was callus, accordingly, BMP-Ewas much more robust than BMP-2 in the same animals.

TABLE 14 Bone Mass (mg HA) Left - Right - WT % increase NHP BMPE BMP2vs. R 5304 721.2298 609.3317 18% 5604 561.4103 489.706 15% 8104 511.4216313.4301 63% 9804 524.7777 474.0646 11% 16204 714.6123 536.7611 33%17504 431.5738 406.1264  6% 22506 625.7583 466.0707 34% average 26% stddev 20% std error 7.40%   paired t-test p = .0040

TABLE 15 Bone volume (mm3) Left - Right - WT % increase NHP BMPE BMP2vs. R 5304 897.4342 720.0308 25% 5604 632.8525 564.9525 12% 8104583.9513 336.0737 74% 9804 573.0165 507.0014 13% 16204 852.5689 551.244655% 17504 514.226 482.9475  6% 22506 766.8873 528.5033 45% average 33%std dev 25% std error 9.60%   paired t-test p = .0070

Replacement of P36 Relative to Wild Type BMP2 with Arginine Did notAffect Activity of BMPGE

Proline at position 36 relative to the amino acid sequence of wild typeBMP2 as set forth in SEQ ID NO:1 is purportedly important in conferringNoggin resistance and providing increased osteogenic activity to wildtype BMP2 (see, e.g., WO 2009/086131). Therefore, to assess the effectof replacing P36 with a non-conserved amino acid substitution on thenovel activity of BMPGE, P36 of BMPGEP was mutated to argininine toproduce BMPGER and osteogenic activity of the two designer molecules wasassessed in vitro. The data disclosed herein in FIG. 12 demonstrate thatreplacing P36 with arginine (P36R) did not affect the binding affinityof the novel BMP-GE designer BMPs and both BMPGEP and BMPGER were asactive as BMP2/6 heterodimer.

BMP-GER has In Vivo Activity Comparable to BMP2/6 Heterodimer

As shown in FIGS. 13 and 14, rat ectopic experiments show that BMP-GERis as potent as BMP-2/6 at driving the formation of ectopic bone at thevery low dose of 0.25 ug total BMP when all molecules are delivered onan ACS sponge. FIG. 13 shows that only BMP-2/6 and BMP-GER, but not BMPEor BMPG, were significantly more active than BMP-2 at this low dose whenthe milligrams of HA formed in the ectopic were quantified by μCTanalysis.

The same samples were demineralized and scored for bone formation (BoneScore) by histology and these results are shown in FIG. 14. By thismethod of scoring, at the low dose of 0.25 ug delivered BMP-2 has nobone formation, and BMP-GER and 2/6 had the highest score. BMP-G andBMP-E were also significantly more potent than BMP-2 but not as activeas BMP-GER.

Comparison of BMP-GER with BMP-2 in In Vivo Models of Osteogenesis andTissue Repair

FIGS. 15 and 16 show the results of a severe NHP fibula osteotomy modelcomparing the activity of BMP-2 and BMP-GER. In this model a wedge withand approximate width of 4-6 mm was removed for each fibula of the NHPand put back in place and held with a titanium pin. The defect was thenwrapped with an ACS sponge containing 250 ug total BMP at a dose of 0.5mg/ml. In each NHP BMP-2 was placed in one limb and BMP-GER was placedin the contralateral limb. FIG. 15A shows photographs of radiographstaken at 5 weeks showing the defect in 4 of the 6 animals. The BMP-GERlimbs showed significantly more robust bone formation than those withBMP-2. FIG. 15B (bottom panel of the figure) shows μCT images of thefibulas of the same 4 animals following their sacrifice at week 10. Ascan be seen, the amount of bone formed is much more robust in theBMP-GER limbs than in the contralateral limbs treated with BMP2.

FIG. 16A-C shows the analysis of these limbs comparing the strength,stiffness, and callus bone volume comparing the BMP-2 and BMP-GERtreated limbs from each animal. On average the BMP-GER treated limbsrequired 21% more torque to break (FIG. 16A), were 24% more stiff (FIG.16B), and the calluses were on average 55% larger (FIG. 16C) than thecontra lateral BMP-2 treated limb. All of these comparisons had a pvalue of less than 0.01 by pairwise analysis. These data show thatBMP-GER induced fracture repair and bone formation significantly earlierand more robustly than BMP-2 in the same animal.

BMP-GER Induced Bone Formation in an NHP Model Equivalently to BMP-2 ata 3 Fold Lower Dose.

To further assess the effectiveness of BMPE bone formation in NHP, theability of BMPE to induce osteogenesis in a wedge defect assay wascompared to that of BMP2. FIG. 17A-C shows radiographs of the boneformation following the wedge defect model in three non-human primateswhere 1.5 mg/ml of BMP-2 was used in one limb and only 0.5 mg/ml ofBMP-GER was used in the other limb using a calcium phosphate cementbased carrier. Radiographically, the healing and bone formation wereequivalent for each of the animals whether the treatment was with thehigh dose of BMP-2 or the lower dose of BMP-GER. Thus, even at one-thirdthe dose, BMPE was equivalent to BMP2 in inducing bone formation,demonstrating the greatly increased activity of this designer BMPcompared with wild type BMP2.

Example 5 BMP Structural Analysis

Crystallization BMP-2 and BMP-6

Purified, fully-glycosylated wild type BMP2/6 heterodimer, wild typeBMP2/2 homodimer, and wild type BMP6/6 homodimer, each produced inmammalian cells, were concentrated to 6-10 mg/ml in 10 mM sodium acetate(pH 3.5), and crystallization attempts were performed using a “mosquito”automated robotic setup at 18° C. (TTP LabTech Inc., Cambridge, Mass.).Initial crystallization hits were obtained for each dimer and theconditions were subsequently optimized to acquire crystals of gooddiffraction quality.

Crystals of wild type BMP2/6, BMP2/2 and BMP6/6 were transientlycryoprotected and frozen in liquid nitrogen prior to X-ray diffractiondata collection at the synchrotron sources (ID beamline of AdvancedPhoton Source SER-CAT). Data were processed and scaled using programsMosflm/Scala to deduce correct crystal lattice type and tointegrate/scale data. The resolution and unit cell parameters are listedas follows: BMP2/6 belongs to the space group of P43212 with two copiesof the heterodimer per asymmetric unit; it diffracted to 2.8 Å in onedirection and 3.0 Å in the other two, with a unit cell of a=b=105.23 Å,c=188.73 Å, α=β=γ=90°. BMP2/2 belongs to the space group of P3₁ with twocopies of the homodimer per asymmetric unit; it diffracted to 2.7 Å witha unit cell of a=b=62.74 Å, c=126.35 Å, α=β=90°, γ=120.° BMP6/6 belongsto the space group of P3₁21 with one copy of the homodimer perasymmetric unit; it diffracted to 2.6 Å with a unit cell of a=b=97.40 Å,c=85.64 Å, α=β=90°, γ=120°. Due to anisotropic diffracting nature ofBMP2/6 crystals, the data was ellipsoidally truncated andanisotropically scaled to preserve contribution of high-resolution data.

The structures of CHO BMP2/6, BMP2/2, and BMP6/6 were determined bymolecular replacement method with program Phaser, using E coli BMP2 (PDBaccession: 1REW) and E. coli BMP6 (PDB accession: 2R52) as searchmodels. After correct molecular replacement solutions were obtained andspace groups confirmed, Phaser-calculated electron density maps wereused to evaluate the quality of the search models, and regions inquestion (especially areas involving type I and type II receptorbinding) were stripped from the original model for rebuilding in orderto avoid model bias.

The structural models went through rigid-body refinement, followed bysimulated annealing, positional and temperature factor refinement.Stripped areas were rebuilt using omit maps, and the processes wererepeated along with TLS refinement until the refinement stabilized. Thefinal refinement statistics are as follows: For BMP2/6,Rw/Rf=0.2231/0.2775, rmsd bonds=0.008, rmsd angles=1.545; For BMP2/2,Rw/Rf=0.2114/0.2659, rmsd bonds=0.005, rmsd angles=0.982; For BMP6/6,Rw/Rf=0.2170/0.2510, rmsd bonds=0.006, rmsd angles=1.182. All threestructures are in very good geometry based on Procheck results.

The CHO BMP2/6 crystal structure revealed extensive glycosylation. Inparticular, the prehelical loop of CHO-produced BMP2, which is animportant binding motif for type I receptors, is different from thecorresponding region of E. coli-produced and refolded BMP2. In thepresence of glycosylation, the CHO BMP2 loop has a uniquely “loopy”conformation when compared to the same region in bacterially refoldedBMP2, which is more helical (Keller et al., Nat Struct Mol Biol11:481-488 (2004)). The data demonstrated that the D53 of CHO-producedBMP2 points towards the receptor interface, while the H54 points awayfrom the receptor as shown in FIG. 3A. In E. coli BMP2, the D53 pointsaway from the receptor and the H54 lines up toward the receptor(referred to herein as a “histidine doorstop”), stacking against aproline residue (P45) on the BMP2 type I receptor Alk3 as shown in FIG.3B (H54 is alternatively labeled H336). Without wishing to be bound byany particular theory, this stacking could prevent the type I receptorfrom fully binding to E. coli refolded BMP2, explaining the reducedbinding activity of E. coli BMP2 when compared with CHO BMP2. Thisstructural feature is illustrated in FIG. 3A-B. In this figure,histidine 54 (H54) is numbered as H336, asparagine 56 (N56) is labeledN338, and P45 of ALK3 is shown in darker gray.

As illustrated in FIG. 4, fully glycosylated CHO BMP6 also has this“doorstop” histidine residue pointing into the receptor binding site.This doorstop His structural motif is a common structural feature amongBMPs (excluding CHO BMP2) (see, e.g., Keller et al., Nat Struct Mol Biol11:481-8 (2004); Kotzsch et al., EMBO J 28:937-47 (2009). Withoutwishing to be bound by any particular theory, it may be that a specificglycan of CHO BMP2 is linked though extensive hydrogen bonding witharginine 16 (“the glycan tether” also designated as R298). This glycantether is illustrated in FIG. 4A and its interaction with the glycan isdepicted using dotted lines between the glycan and this tether R298which is also referred to herein as R16. Thus, without wishing to bebound by any particular theory, the glycan tether may serve to stabilizethe conformation of the pre-helical loop of the BMP2 molecule such thatthe histidine doorstop, if otherwise present, is instead oriented awayfrom the type I receptor interface thereby allowing the ligand tocontact the receptor to a greater extent than in the presence of thehistidine doorstop. In other words, the re-orientation of the histidinedoorstop as observed in CHO BMP2 is most likely to be the consequence ofglycan tethering. Without wishing to be bound by any particular theory,the data disclosed herein suggest that where the histidine doorstop ispresent, removal of the doorstop in the absence of glycosylation (i.e.,by introducing a mutation that changes the orientation of the His awayfrom the receptor interface) increases binding of the BMP ligand withthe type I receptor.

Designer BMPE, which contains a low affinity type II binding domain ofBMP2 and a low affinity type I binding domain similar to that of BMP6,shows (1) increased osteogenic activity in both in vitro and in vivoassays; and (2) has an unexpected gain of function to bind Alk2, a typeI receptor, despite the presence of a low affinity type I receptorbinding domain. Without wishing to be bound by any particular theory, itmay be that this surprising discovery is mediated by multiple hydrogenbonds formed between the glycan moieties and the R16 (the “glycantether”) in the type I receptor-binding domain of BMPE. This tetheringinteraction may mediate a structural rearrangement at the pre-helicalregion of the BMPE molecule that presents a proper binding surface forAlk2 by positing H54 (the “doorstop”) away from the interface therebyallowing closer interaction between the BMP and the receptor. Incontrast, as illustrated in FIG. 4B, BMP6, which also has a low affinitytype I binding domain similar to that of BMPE, does not bind Alk2because its “glycan tether” (R413) which would be needed to tether itsglycan moieties, is shifted in location when compared to the BMPE tether(R298/R16). Thus, in BMP6, the glycan is not tethered and the doorstop(H454) is not positioned away from the ligand-receptor interface. The“glycan tether” appears to be a phenomenon unique to wild typeglycosylated BMP2 (as exemplified by BMP2 produced in CHO cells), andstructural remodeling of the prehelical loop of BMPs by introducing (orremoving) “glycan tether” can now be used, for the first time, tomodulate type I receptor-binding ability of other BMPs. Therefore, oneskilled in the art, now armed with the teachings provided herein, wouldunderstand how to mutate the BMP in order to position the doorstop awayfrom the receptor interface by introducing mutations that swing the H54away or by affecting the glycan tether so that tethering mediates theshift in H54 and would further appreciate that these teachings can beused to design a BMP with increased (or decreased if mutations areintroduced to swing H54 into the doorstop position) binding to itsreceptor or to create designer BMPs with gain-of-function mutations suchthat they bind to novel receptors that they did previously bind. As morefully set forth below, the present invention demonstrates how to usethis novel doorstop/tether design method to design improved osteogenicproteins. Thus, the present invention provides a novel method forrational design of improved osteogenic proteins comprising alteredreceptor binding.

In order to more fully understand what drives the BMP-E and BMP-GERbinding to ALK-2, and to further elucidate this novel mechanism ofaffecting receptor binding using the doorstop/glycan tether, the crystalstructure of BMP-E was solved and compared to that of BMP-2 and BMP-6.The key structural findings are shown in FIGS. 18 and 19. As illustratedin FIG. 18 BMP-E maintains the ordered sugar of BMP-2 while maintainingthe central helical structure of BMP-6. The structure shown in FIG. 18demonstrates that BMP-E, and presumably BMP-GER, is different from bothBMP-2 and BMP-6 in the critical region of type I receptor binding. FIG.19 is a blow-up comparing the area surrounding the potential Hisdoorstop of BMPE (light gray) and BMP6 (dark gray). The diagramdemonstrates the similarity of the alignment of the histidine andasparagine in both molecules and also shows the difference in glycanpositioning and demonstrating the tethering of the BMPE glycan by R16(the tether) which also causes a more rigid conformation of the glycansuch that a longer glycan is rendered for BMPE by the analysis comparedwith the shorter glycan rendered for BMP6 (in dark gray).

In order to determine if the glycan of BMP-E is driving the interactionwith ALK-2 and its higher activity, BMP-2, BMP-6, and BMP-E were treatedwith Endo H to clip the sugar down to two GlcNac units. The bindingaffinity of BMP-E for AlK-2 decreased to 400 nM whereas it's affinityfor ALK-3 and ALK-6 were still in the 3-6 nM range showing the intactcarbohydrate is extremely important for this interaction. The activityof this deglycosylated mutant also decreased significantly. As shown inFIG. 20, in this experiment the Endo H treated deglycosylated BMP-Eactivity shifts to the right and is almost equivalent to BMP-6 WT. TheEC-50 shifts from 3 nM to approximately 50 nM. These data show that thecarbohydrate of BMP-E is essential for its activity, and this shouldtranslate to BMP-GER since it has the exact same region of BMP-6substituted into BMP-2 with only the finger domains differing. Since thecarbohydrate is essential for increased receptor binding and osteogenicactivity, these results indicate indicates that production of BMP-E orBMP-GER in E. coli, or any other system lacking glycosylation, would notproduce a BMP with activity superior to BMP-2 WT.

Crystallization BMP-E and BMP-GER

Purified, fully-glycosylated BMP-E, was concentrated to 8.7 mg/ml in 25mM sodium acetate (pH 3.5), and crystallization attempts were performedusing a “mosquito” automated robotic setup at 18° C. (TTP LabTech Inc.,Cambridge, Mass.). Initial crystallization hits were obtained for eachdimer and the conditions were subsequently optimized to acquire crystalsof good diffraction quality.

Crystals of BMP-E were transiently cryoprotected and frozen in liquidnitrogen prior to X-ray diffraction data collection at the synchrotronsources (ID beamline of Advanced Photon Source SER-CAT). Data wereprocessed and scaled using programs Mosflm/Scala in the CCP4 package todeduce correct crystal lattice type and to integrate/scale data. Theresolution and unit cell parameters are listed as follows: BMPE belongsto the space group of P43212 with two copies of the BMPE in eachasymmetric unit; it diffracted to 2.7 Å, with a unit cell of a=b=67.78Å, c=148.01 Å, α=β=γ=90°.

The structure of BMPE was determined by molecular replacement methodwith program Phaser, using fully glycosylated CHO BMP2 and BMP6, bothdetermined at Pfizer, as search models. After correct molecularreplacement solutions were obtained and space groups confirmed,Phaser-calculated electron density maps were used to evaluate thequality of the search models, and regions in question (especially areasaround type I receptor binding and glycosylation) were stripped from theoriginal model for rebuilding in order to avoid model bias.

The structural model of BMPE went through rigid-body refinement,followed by simulated annealing, positional and temperature factorrefinement using program Phenix. Stripped areas were rebuilt using omitmaps, and the processes were repeated along with TLS refinement untilthe refinement stabilized. The final refinement statistics are:Rw/Rf=0.2252/0.2840, rmsd bonds=0.006, rmsd angles=0.935. The structureis in very good geometry based on Procheck results.

BMPE, a designer molecule wherein residues 44-80 of BMP2 replaced by thecorresponding region from BMP6, maintains the overall framework of BMP2while possessing the Type I receptor-binding segment of BMP6. As shownin FIG. 21, the crystal structure revealed that the grafted segmentstill retains a similar conformation as in BMP6, forming a small helixin the pre-helical loop within which the “doorstop” H54 points towardthe receptor. However, without wishing to be bound by any particulartheory, it may be that due to the presence of “glycan tethers” at R16and E110* (E109 of BMP-2), both of which form multiple hydrogen bondswith the third and forth glycan moieties (β-mannose and α-mannose,respectively), the extended glycosylation chain is attached to theprotein surface, exactly as seen in CHO BMP2. The tethering of glycanchain also dislocated the pre-helical loop by about 2 Å in reference tothe overall framework. Without wishing to be bound by any particulartheory, it may be that the surprising discovery that the BMP6-likepre-helical loop combined with the BMP2-like glycosylation present abinding epitope for the Alk2 receptor, which does not normally interactwith either BMP2 or BMP6. Deglycosylation renders BMPE incapable ofbinding to Alk2, which underscores the importance of glycosylation inmediating Alk2 recognition for BMPE.

Example 6

Noggin Resistance

In order to investigate if resistance to the secreted BMP inhibitorNoggin would increase the activity of BMP-GER or BMP-E, these potentialtherapeutic molecules were further modified to potentially increasetheir resistance to Noggin. Recently, it was demonstrated that in E.coli-produced proteins, incorporation of a C-terminal portion ofactivin-A into wild type BMP2 increased resistance to Noggin inhibition.See WO 2010/099219 at, e.g., FIGS. 15 and 16. Therefore, to determinewhether the novel designer proteins disclosed herein could be improvedeven further by incorporation of activin-A sequences, the Nogginresistance (NR) amino acid sequences were substituted into BMP-E (SEQ IDNO:12) and BMP-GER (SEQ ID NO:37) to produce BMP-E-NR (SEQ ID NO:70) andBMP-GER-NR (SEQ ID NO:71). As shown in FIG. 22 BMP-E-NR and BMP-GER-NRhave equivalent in vitro activity in an Alkaline phosphate activityassay compared with BMP-E and BMP-GER and are completely resistant toNoggin while BMP-E and BMP-GER are sensitive to Noggin.

To understand the potential basis for the Noggin resistance demonstratedin vitro by BMPE-NR and BMP-GER-NR, the binding affinity of thesemolecules for the type II activin receptor ActRIIB was assessed. Asshown in Table 16, below, activin-A is unable to bind Noggin but theNoggin resistant BMP-E-NR and BMP-GER-NR bind Noggin, but not asstrongly as BMP-2, BMP-E, or BMP-GER. These data also show that theNoggin resistant BMPs bind the type II BMP receptor ActRIIB withextremely high affinity that is even higher than that of BMP-GER.Without wishing to be bound by any particular theory, these datasuggests that BMP-GER-NR and BMP-E-NR are resistant to Noggin due totheir much higher affinity for the BMP type II receptors than that ofNoggin and are therefore able to bind BMP receptors even in the presenceof high amounts of Noggin.

TABLE 16 ActRIIb affinity (nM) BMP-E 9.00 BMP-E-NR 0.50 BMP-GER 2.00BMP-GER-NR 0.07 Noggin Affinity BMP-E 1.00 BMP-E-NR 6.00 BMP-GER 4.00BMP-GER-NR 7.50 ActRIIb on rate (K on) with equal molar ration ofnoggin* BMP-E no binding BMP-E-NR no binding BMP-GER 1.00E+03 BMP-GER-NR1.00E+06 *little to no change in on rate with up to 10 fold molar excessof Noggin

Although the BMP-E and BMP-GER molecules comprising the Noggin resistantportions of activin-A demonstrated Noggin resistance in vitro, theseresults did not correlate to improved in vivo activity. That is, whenthe osteogenic activity of these BMP-E-NR and BMP-GER-NR was comparedwith that of BMP-E and BMP-GER in a rat ectopic assay, the NR moleculeswere much less potent. This data is shown in FIGS. 23 and 24. Morespecifically, the Bone Score for BMP-GER and BMP-GER-NR was comparedand, at all concentrations tested (0.125 μg, 0.25 μg, 0.5 μg, and 1.0μg), BMP-GER greatly outperformed BMP-GER-NR as shown in FIG. 23.Similarly, FIG. 24 demonstrates that BMP-E produced a much higher BoneScore compared with BMP-E-NR in this in vivo assay. Thus, for both BMP-Eand BMP-GER the purportedly Noggin resistant versions were much lesspotent in vivo than their NR (Noggin resistant) counterparts, and in thecase of BMP-E, almost all in vivo activity was lost due to incorporationof sequences of activin-A (see FIG. 24 comparing BMP-E-NR with BMP-E).

These data demonstrate that incorporation of sequences potentiallyconferring Noggin resistance, while increasing binding for certain typeII receptors (e.g., ActRIIB), did not increase in vivo osteogenicactivity of the designer BMP.

Further, although the addition of Noggin did not improve the osteogenicactivity of the designer BMPs in vivo, indeed, it appeared to decreasetheir in vivo activity, the novel designer BMPs of the inventiondemonstrate greatly increased osteogenic characteristics compared withwild type BMP and provide potential novel therapeutics for a widevariety of applications even without demonstrating Noggin resistance invitro. Therefore, the designer BMPs of the invention provide remarkablenovel potential therapeutics demonstrating a greatly improved clinicalprofile for, among other uses, bone augmentation and repair.

The disclosures of each and every patent, patent application, andpublication cited herein are hereby incorporated herein by reference intheir entirety.

While the invention has been disclosed with reference to specificembodiments, it is apparent that other embodiments and variations ofthis invention may be devised by others skilled in the art withoutdeparting from the true spirit and scope of the invention. The appendedclaims are intended to be construed to include all such embodiments andequivalent variations.

The invention claimed is:
 1. A designer BMP comprising the amino acidsequence of SEQ ID NO: 12 or SEQ ID NO:70.
 2. The designer BMP of claim1, wherein the BMP comprises the amino acid sequence of SEQ ID NO: 12.3. The designer BMP of claim 1, wherein the BMP comprises the amino acidsequence of SEQ ID NO:
 70. 4. A pharmaceutical composition comprising adesigner BMP comprising the amino acid sequence of SEQ ID NO: 12 or SEQID NO: 70 and a pharmaceutically acceptable carrier.
 5. An isolatednucleic acid molecule comprising a nucleotide sequence encoding adesigner BMP comprising the amino acid sequence of SEQ ID NO: 12 or SEQID NO:70.
 6. The isolated nucleic acid molecule of claim 5, wherein thenucleic acid molecule encodes the designer BMP of SEQ ID NO:
 12. 7. Theisolated nucleic acid molecule of claim 5, wherein the nucleic acidmolecule encodes the designer BMP of SEQ ID NO: 70.